APPENDIX K
Proposed HDD Execution Plan
(TGL Application, Volume II, Appendix C)
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Horizontal Directional Drilling
it Installation Plan
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ts
For
“Sentinel Midstrearfi.
Rev.
Date
Reason for Issuance
Laney Project Number: XXXLGI
Prepared By
Checked by
Approved By
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Execution Plan
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Doc” Number
Table of Contents
1.0
Definitions
2.0
Introduction
3.0
Project Management
4.0
Safety/Security
5.0
Environmental
6.0
Quality
7.0
Installation
8.0
Drilling Fluid Program "
9.1 Make-up Water
‘ -
' 9.2 Drilling Fluid Composition
9.3 Management
9.4 Lost Circulation
.
‘
9.5 Inadvertent Releases
Disposal
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10.0
Fluid Transport
11.0
HDD Equipment Contingency Plan
12.0
As-Built Drawing Plan
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EXHIBITS:
Site Specific Safety Plan
Preliminary HDD Schedule
IFC HDD Drawings
Site Layout Drawings
Drilling Rig and Surface Pit Specifications
Guidance Information
Drilling Fluid Program/SDS
Example Daily Reports
Drilling Crew Resumes
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DEFINITIONS
TERM
DEFINITION
A clay mineral that is composed principally of three-layer clays, such as
montmorillonite, and widely used as the primary mud additive for viscosity
and filtration control in water based muds. Commercial bentonite ores
vary widely in amount and quality of the swelling clay, sodium
montmorillonite. Bentonite is commonly used as the base for beauty
Bentonite
masks, cat litter, binding material in foods such as chocolate bars and
vitamins, lining of ponds and as grout to seal surface waters from
groundwater aquifers in water wells.
The Bottom Hole Assembly is the lower portion of the drillstring,
consisting of (from the bottom up in a vertical well) the bit, bit sub, a mud
motor (in certain cases), stabilizers, drill collar, heavy-weight drill pipe,
and crossovers for various threadforms. The BHA must provide force for
BHA
Drill String
the bit to break the rock (weight on bit), survive a hostile mechanical
1
Drilled Cuttings — “Cuttings”
environment and provide the driller with directional control of the
downhole tooling. Oftentimes the assembly includes a mud motor,
directional drilling and measuring equipment, and other specialized
devices.
The combination of the drill pipe, the bottom hole assembly and any other
tools used to make the drill bit turn at the bottom of the wellbore.
Small pieces of clay, sand and rock that break away due to the action of
the bit teeth. Cuttings are screened out of the liquid mud system at the
shale shakers and are monitored for composition, size, shape, color,
texture and other properties by the mud engineer.
In HDD, drilling fluid is most often a mixture of 90-96% fresh water,
bentonite, natural and synthetic polymers, surfactants and other additives
used in operations to drill boreholes into the earth. The drilling fluid is
designed to perform specific functions in the bore hole, such as but not
limited to, hole stabilization, hole cleaning, cuttings suspension, and
lubrication. ln HDD, products used to make drilling fluid are most often
Drilling Fluid —
non-hazardous materials that are commonly used as food grade additives
such as cellulose, starch, xanthan gum, detergents, vegetable oil based
lubricants, etc. LGl only uses drilling fluid additives that are considered
safe under US Code of Federal Regulations Title 40: Protection of
Environment, Chapter I, Subchapter N “Effluent Guidelines and
Standards”, Part 435, Subpart A, Appendix 2, "Drilling Fluids Toxicity Test
- EPA Method 1619” and Appendix 3 “Mixing Base Fluids with Sediments
- EPA Method 1646”. Synonymous with "drilling mud" in general usage.
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The site along the bore path in which the pilot hole enters the ground.
This is often called “Rig Side" as it is where the rig is most often set up for
Entry Side
drilling.
The site along the bore path in which the pilot hole exits the ground. This
is often called “Pipe Side” as it is usually where the product line is hooked
Exit Side
to the swivel and drill string to be pulled through the bore.
HDD
The trenchless excavation method known as Horizontal Directional
Drilling.
The part of the bit that includes a hole or opening for drilling fluid to exit.
The hole is usually small (around 0.25 in. in diameter) and the pressure of
the fluid inside the bit is usually high, leading to a high exit velocity
through the nozzles that creates a high-velocity jet below the nozzles.
Jet Nozzles - “Jets”
the hole. The sizes of the nozzles are usually measured in 1/32—in.
increments (although some are recorded in millimeters), are always
reported in "thirty-seconds" of size (i.e., fractional denominators are not
reduced), and usually range from 6/32 to 32/32.
A component of a drillstring that houses the steering probe and provides
weight on bit for drilling. The Monel is a non-magnetic thick-walled tubular
piece machined from a solid bars of stainless steel. It is an integral
component of the BHA.
A positive displacement drilling motor that uses hydraulic horsepower of
Monel
Mud Motor
This high-velocityjet of fluid cleans both the bit teeth and the bottom of
the drilling fluid to drive the drill bit. Mud motors are used extensively in
1
directional drilling operations when drilling through hard of stiff formations
such as rock, shale and packed sands.
Operating Company
The owner of the product line being installed.
The first pass of the drilling operation, completed using a steerable bit
and guidance system. The pilot hole will then be enlarged during the
reaming process until it is of proper gauge in which to install the product
Pilot Hole
pipe(s).
Pipeline Contractor
Product Pipe
The “Prime” Contractor on a pipeline spread.
,
”'~‘. m“' .
The product line being installed under contract. This is usually a pipe or
bundle of pipes that are installed for oil, gas, chemical, water, or sanitary
pipelines, telecommunications, electrical or other underground utilities.
Pullback
The process of pulling the product pipe through the borehole.
Pullback Swivel
Devices placed between the reamer and pulling head to minimize rotation
of the product pipe during pullback.
Ream
To enlarge to pilot hole to the proper gauge for product pipe installation.
Reamer
The downhole tooling used to enlarge the pilot hole until it is the proper
gauge in which to install the product pipe(s).
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One of several flow characteristics of a material, such as a drilling fluid.
Rheological Properties
Rheology
Shear-stress measurements made at a minimum of two shear rates are
needed to define the properties of these fluids. Three parameters are
sometimes used to better define fluid behavior. "Rheological properties"
most often refers to the Bingham plastic fluid parameters, PV (plastic
viscosity) and YP (yield point), as measured by the direct-indicating
rheometer. The power-law fluid model parameters, exponent (n) and
consistency (k), apply to polymer muds, although the three-parameter
Herschel-Bulkley model is a better fit to polymer muds.
Generally, the study of how matter deforms and flows, including its
elasticity, plasticity and viscosity.
Test procedure used to calibrate the steering probe.
Roll Test
Spud
l
Steering Probe
To start the drilling process by removing rock, dirt and other sedimentary
material with the drill bit.
The measurement device that provides the inclination and azimuth of its
location in a bore (typically the measured depth at the time of
measurement). In HDD, the position of the bore must be known with
reasonable accuracy to ensure the correct borehole path and to know its
position in relation to other utilities. The measurements themselves
include inclination from vertical, and the azimuth (or compass heading) of
the borehole if the direction of the path is critical. These measurements
are made at discrete points in the bore, and the approximate path of the
borehole is computed from the discrete points. Measurement devices
range from magnetometers, electronic accelerometers, and gyroscopes.
Surface Coil . _
Electrical wires set out along the bore path in a grid to create an
electromagnetic current that is used to guide the steering probe and
measure inclination and azimuth of the steering probe in relation to the
artificial magnetic field.
Swab
The final pass before pullback to ensure the bore hole is clean of any
debris or tight spots.
Tail String".
Drill pipe added to back side of the reamer as the reamer is pulled
through the bore hole.
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INTRODUCTION
DESCRIPTION OF HDD METHOD OF CONSTRUCTION
This procedure is specific to the proposed installation of one (1) trenchless crossing for Sentinel Midstream,
"Operating Company”; and “Pipeline Contractor Name”, “Pipeline Contractor”; by horizontal directional drilling
(HDD). The pipeline project is located in Burlington Junction, Missouri and is known as the Nodaway River
Crossing, “pipeline project”. HDD is a trenchless excavation method, accomplished in phases using a
specialized horizontal drilling rig with ancillary tools and equipment.
Laney Group Inc., “LGI”; will provide the necessary labor, materials, tools and equipment to complete the
directionally drilled installation(s) as specified in the attached documents; to the guidelines set forth herein,
and to the lines, grades and specifications shown on the final design drawings or Issued For Construction
documents, “IFC". The Operating Company and its Pipeline Contractor will be responsible for the final
constructed product, and forfurnishing the qualified labor and superintendence necessary to assist LGI in this
method of construction.
HDD techniques are used to create or direct an enlarged hole along a predetermined path to a specified target
location. The process involves use of mechanical and hydraulic deviation equipment to change the drill course
and uses instrumentation to monitor the location and orientation of the pilot hole assembly along a
predetermined course.
Upon completing the pilot hole, the diameter of the initial hole is enlarged to accommodate the product pipe
using a reaming tool. Successive passes are typically completed in series until the desired hole diameter is
achieved. Once the final diameter ream pass is complete the bore path is swabbed for additional hole cleaning
and then preparations are made to install the product pipe. The following procedure describes the HDD
method of installing for the pipeline project.
Pipe Size(s)
Crossing
(in.)
Description
~ 36"
Crossing Name
42”
Crossing Name
Length
' ; (ft.)
‘
'
"
_
Entry
Exit
Planned
Angle
Radius
Angle
Radius
Rig Size
xxxx
-°
-
-°
-
250T
Xxxx
-°
-
-°
-
250T
The IFC profile designs incorporate entry and exit angles of 10-degrees for the proposed crossing. The
crossing has a designed, vertical curve, radii 1,800 ft. In general, the soils we anticipate to encounter for the
pipeline crossings include silts, sands, clay, and weak shale.
LGI takes pride in its capabilities and quality of work on every project. On this project specifically, LGI will
comply with Pipeline Contractor Quality Plan and perform to the Operating Company and Pipeline Contractor
project specifications. LGI will ensure that the required documentation (i.e. daily reports, drilling logs, survey
reports, mud reports, etc.) are prepared and submitted in a timely manner. If for any reason a project team
member feels that quality is compromised LGI Project Manager will work to resolve the issue.
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PROJECT MANAGEMENT
LDD PERSONNEL AND PROJECT ORGANIZATION
LGI Project Manager will be responsible for managing the execution plan, contract and schedule. LGI
Superintendent is responsible for executing construction and is the on-site point of contact for daily operations.
Crew size is approximately 10 people. LGI crew members, including Steering Technician/Surveyor, Drilling
Fluids Engineer and other LGI subcontractors report directly to LGI’s on-site Superintendent.
LGI will maintain qualified personnel to supervise and operate equipment.
A Drilling Fluids Engineer (DFE), certified by an API compliant program, will design a fluids program for each
crossing and monitor the program through field reports, superintendent updates and contact with the fluid
system operator to ensure that the program is performing as intended. The DFE will make updates to the
program as necessary.
d‘
3.2
HOURS OF OPERATION
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LGI proposes to work on a twelve (12) hour per day basis, six (6) days per week. LGI will inform the Pipeline
Contractor and Operating Company and/or on site representatives if a departure from the proposed operating
hours is required. It is presumed that any work hour restrictions will be lifted for the pullback phase.
3.3
PROTECTION OF UNDERGROUND FACILITIES
LGI, with assistance from the Pipeline Contractor, will undertake the following steps prior to commencing
drilling operations in a location that contains underground facilities:
0
Contact the utility location/notification service for the construction area if applicable
0.
Positively locate and stake existing lines, cables or other underground facilities including exposing
any facilities located within 25-feet of the designed drill path
3.4
PROJECT CONDITIONS
3.4.1
PREPARATION OF SITES
An all-weather access to each HDD Entry and Exit site will be required. A level, hard standing work area
«9
and equipment ingress or “hard stand” will also be required for the drilling operation. The work areas prepared
by Contractor for the Entry and Exit points will be as follows:
3.4.1.1 ENTRY (“RIG SIDE”)
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A rectangular area will be prepared within the allowable workspace shown on the IFC drawings. Access to
the Entry site should be an “all weather” board road or similar, capable of withstanding heavily loaded
transporters. The hard stand should be a cover of gravel, wooden mats, or steel plates. The bentonite receipt
pit must be of sufficient capacity (approx. 100 BBL's) to accommodate the used slurry/cuttings mixture. The
pit will only be prepared after the rig is on site. Secondary containment(s) will be constructed and placed
under each piece of equipment that has a petroleum based method of operating which includes all fuel tanks.
3.4.1.2 DEAD-MAN
A dead-man serves as the primary anchorage device for the drill rig. The dead-man should sit relatively flush
with the ground surface. Steel Auger or H-beam spuds or anchor piles will be driven through the dead-man
to provide adequate rig stability. lf soil conditions require, alternate methods may be used to anchor dead-
man.
»
3.4.1.3 DRILL RIG COMPONENTS
.
,
A typical HDD rig spread as proposed for use On this project consists of the below ajor components.
Entry Side
0 Drill rig1
._
k .
Hydraulic power unit1
w
- ' ’
Control cabin1
Water pumps, 4-inch and 6-inch trash pumps with suction hos
500 bbl steel tanks for water supply / drilling fluid storage
Diesel generator
Drilling fluid recycling system
Drilling fluid pump
Drill pipe
3
4*
Magnetic guidance system and related pilot hole components
0
0
Probe and interface with annular pressure sensors
Laptop computer and printer
0
AC power source, current control box and tracking wire
, 0
Pilot hole drill bit: 6.5 — 12.25 inch tri-cone
“Non-magnetic steering collar “Monel”, approx. 20—feet in length
0
Other miscellaneous tools
Excavator
4-inch electrically driven water pumps and generator
Above ground fuel storage tank, approx. 500 gal. capacity
Tanker truck with vacuum pump
1Certain models of LGI rigs have the hydraulic power unit and/or control cab mounted on the rig.
The drill rig will be positioned at Entry and aligned to enter the ground at the staked Entry point. The rig is
then elevated at the rear so the Entry angle conforms to the profile drawing. Finally, the rig is anchored in
place and ready for pilot hole operations to begin.
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Exit (“Pipe Side”)
A rectangular area will be prepared within the allowable space as shown on the design and alignment
drawings. The hard stand should be constructed in a similar manner to the Entry. An access route similar
to that on Entry side to be provided. A bentonite pit will be constructed to collect any bentonite/slurry
discharged from the drill path. The pit will be similar to that excavated at Entry.
Typical equipment required at Exit includes:
0
Excavator with digging and lifting functionality (provided by Pipeline Contractor)
o
0
0
500b steel tank for water supply / drilling fluid storage
Above ground fuel storage tank, approx. 500 gal. capacity
Tanker truck with vacuum pump, if necessary
The Pipeline Contractor will provide necessary support equipment (i.e. side boom, tracked excavator) to aid
in tailing the pipe string during the pullback operation. Pipeline Contractor will provide Lift Plan for pullback.
,
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SAFETY AND SECURITY
4.1
SAFETY REQUIREMENTS
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Safety is LGI number one priority. Work will be conducted in accordance with LGI Safety Manual and the Site
Specific Safety Plan. Both documents will be made available at the job site. LGI will perform the work in a
manner that maximizes safety and minimizes the exposure of its employees and equipment to hazardous and
potentially hazardous conditions, in accordance with applicable safety standards.
LGI will make best effort to adhere to Pipeline Contractor and Operating Company safety standards, but will
never operate below LGI minimum standards. LGI will attempt to eliminate hazards and associated risks to
prevent the likelihood and mitigate the severity of an incident. It is anticipated that the project team leaders
will review site— specific safety requirements prior to LGI mobilization. These requirements will be inserted
into LGI Site Specific Safety Plan for implementation in the field.
LGI will perform the directional drilling construction in an effort to:
o
minimize the movement of the ground
2
o
prevent subsidence of the surface structures and utilities above and in the vici y of the directional
0
protect the integrity of the electrical conduit
drill
4.1.1
PRE-CONSTRUCTION SAFETY
,‘
LGI requires that all regular and temporary employees (Short Service Employees) attend its own Safety
Orientation Program. LGI project personnel and subcontractors will attend the Pipeline Contractor and
Operating Company safety orientations (if applicable) during project kick-off and adhere to site-specific safety
requirements. Employees will possess valid training certificates required to enter the jobsite.
4.1.2
CONSTRUCTION SAFETY
Each morning before any operations begin, LGI crews complete a combined Tailgate Safety Meeting and a
Job Safety Analysis (JSA). The tailgate safety topic usually covers hazards around the drill rig and the JSA
covers planned operations for the day. If the planned work changes then a new JSA is completed. LGI has
JSAs that identify potential risks associated with drilling work tasks and provides for a group discussion with
the crew for mitigation of the risks.
A weekly safety meeting will also be held. The subject of the safety meeting varies from week to week and is
assigned by LGI Safety Department. It is generally related to HDD operations and current events.
Example copies of the Laney JSA are included with the Safety Plan.
4.2
SECURITY
LGI will comply with all Security Plans and Protocols as prescribed by the Pipeline Contractor and Operating
Company.
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5.0
ENVIRONMENTAL
5.1
OVERVIEW: ENVIRONMENTAL MANAGEMENT
Environmental Management is critical to the Horizontal Directional Drill (HDD) construction process because
of the risk exposure associated with public perception when the environment is impacted by drilling operations.
It is important for LGI to properly evaluate every project and optimize operations to prevent undesirable
environmental impacts. The following Environmental Management procedure will be implemented for each of
LGI HDD pipeline installation projects.
5.2
PROCEDURE
Prior to initiating any activity onsite, all LGI site personnel are expected to be aware of the project related
Environmental Management Plan and the associated requirements for complying with project specific permits
or othergoverning bodies. The orientation of LGI personnel should be arranged by the Project Managerand/or
Superintendent.
All LGI site personnel will be led by the Superintendent to implement the follewing standards of care
throughout the project.
x 9;)
LGI will take the following precautions to ensure that a release of oil and hazardous substances'Is prevented
or contained.
.
5.2.1
Containers:
o
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.
.
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All containers 55-gallons or greater shall be stored on pallets and surrounded with temporary
containment
Temporary containment will include, but will not be limited to: temporary earthen berms with
polyethylene underlining the entire contained area with a minimum of 10 mil thickness or a portable
o
containment system constructed of steel, PVC or other suitable material.
Containment areas shall be capable of containing 110% of the volume of material stored in these
areas.
0
All container storage areas shall be inspected daily for leaks and deterioration.
o
Leaking and/or deteriorated containers shall be replaced as soon as the condition is first detected
o
0
and cleanup measures must be implemented to remediate all contamination.
No incompatible materials shall be stored in the same containment area.
No storage area shall be unattended for periods longer than one (1) day.
5.2.2
o
o
LGI shall operate only those tanks for fuel and material storage that meet the requirements and
regulations specified in the contract agreement and shall be surrounded with containment.
Self-supporting tanks shall be constructed of carbon steel or other materials compatible with the
contents of each tank.
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All tanks will be inspected daily for leaks and/or deterioration.
Any tank utilized for storing different products between construction locations will be thoroughly
decontaminated prior to refilling.
5.2.3
Unloading/LoadingAreas:
Transferring of liquids and refueling shall only occur in predesignated locations at least 100 feet from
all water bodies and 200 feet from any water well. Where conditions require that construction
equipment be refueled within 100 feet of water bodies or wetlands, these operations will be manned
continuously to ensure that over filling, leaks or spills do not occur. Where stationary equipment must
remain within 100 feet of a water body or wetland, adequate secondary containment must be
provided.
Spill prevention kit(s) will be on site. At a minimum, one large spill kit will be available onsite at each
job site and capable of cleaning up a hydrocarbon product spill of no more than 30 gallons.
LGI will inspect the area beneath loading/unloading locations for spills before and after each use.
Corrective measures shall be implemented if spills occur.
\,I
5.2.4
HDD Operations:
Precautions will be in place to ensure that a release of fuels and/or oils of any kind from all HDD
equipment is prevented or contained.
LGI will conduct periodic inspection of all hoses transporting hydraulic oils, lubricants and/or other
oils and fuels.
,
Assure the necessary precautions are in place to minimize the chance for hydraulic fracture and
inadvertent returns of drilling fluid to the surface.
Implement corrective measures to contain, collect, and/or in the event that inadvertent seepage finds
4
5.3
its way to the surface.
Address all spills/leaks of hydraulic oil, lubricants and/or other oils and fuels which occur from HDD
operations and supply the necessary manpower and spill response equipment as needed.
Immediately notify the Site Inspector of any spills.
EMERGENCY SPILL RESPONSE PROCEDURES
The following provides generic descriptions of emergency response procedures to be performed when
addressing oil and hazardous substance releases at the site. Each response will vary depending upon the
nature and extent of the incident. However, the general protocols in this section will be followed.
5.3.1
LGI Responsibilities:
LGI will designate an Emergency Coordinator (EC) for the site.
All LGI employees will be instructed on the proper clean-up of equipment, techniques to clean up
any spill and also the proper disposal of used materials.
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LGI will be responsible for cleaning and addressing all spills, which occur as a result of LGI
operations.
For small or “de minimis" spills (less than the Reportable Quantity), external notification
requirements of this Plan need not to be followed. However, this does not relieve LGI from correcting
these releases in an environmentally sound manner. The "Reportable Quantity” depends on the type
of substance released and where released (e.g. into water vs. on land); different kinds of spills are
subject to different provisions of state and federal rules.
LGI shall supply necessary manpower and equipment to address releases resulting from our
operations.
LGI is responsible for immediately notifying the Site Inspector of any spills.
5.3.2
Pipeline Contractor’s Responsibilities — (Requested by LGI)
Pipeline Contractor’s Superintendent will act as the Emergency Coordinator (EC).
Pipeline Contractor’s Superintendent shall be responsible for notifying appropriate agencies of
releases in excess of Reportable Quantities, including follow-up written notification.
Pipeline Contractor will provide supporting personnel and equipment to address Reportable Quantity
releases.
Pipeline Contractor shall be responsible for contracting outside remedial response firms and
emergency response teams if their services are required.
5.3.3
Duties of LGI superintendent and requested of Pipeline Contractor’s Superintendent(s)
Determine the source, character, amount and extent of the release or incident.
Assess the potential hazards to the site, environment and neighboring community due to the incident,
including possible toxic gases, hazardous runoff, etc.
Sound an alarm and/or evacuation command to alert personnel, when required.
Contact outside remediation services or local emergency response teams to assist with incident or
injuries too serious to be addressed by LGI or Pipeline Contractor personnel.
Commit manpower and equipment for minor incidents, which can be reasonably corrected by LGI
personnel.
Direct remediation efforts to contain and control releases.
Document the remedial effort, including taking photographs wherever possible.
Coordinate cleaning and disposal activities, including recovering usable products from the release.
Ensure that all emergency equipment used during the incident is clean and fit for use prior to placing
these devices back into services. Replace spent response equipment and materials when necessary.
5.3.4
Emergency Response Contractors
LGI will request that the Pipeline Contractor take responsibility for contacting emergency response contractors
to address emergency responses beyond the capabilities of the LGI on-site personnel.
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Clean Up Procedures
All clean-ups will be communicated to a competent person who will be in contact with the necessary company
personnel for disseminating the information as required. The following section outlines specific procedures to
be followed by LGI (and requested of Pipeline Contractor) when addressing releases:
5.4.1
Oil/Fuel Spills:
Small spills and leaks must be remediated as soon as possible. Use absorbent pads wherever
possible to reduce the amount of contaminated articles. The used absorbent pads, contaminated
dirt, etc. must be removed and transported to a state approved disposal site.
Restrict spills to the containment area if possible by stopping or diverting flow from the oil/fuel tank.
If possible, stop or divert the flow from the oil/fuel tank when the release exceeds the containment
area.
If the release exceeds the containment system capacity, immediately construct additional
containment using sandbags or fill material. Every effort must be made to prevent the seepage of oil
into soils and waterways.
If the release occurs into a facility drain or nearby stream, immediately pump any floating layer into
drums. For streams, place a barrier between the release area and the site boundary. This barrier
may include, but is not limited to, oil booms, hay bales, under flow dams or means to contain the
release. As soon as possible, excavate contaminated soils and sediments.
After all recoverable contaminant has been collected and drummed, place contaminated soils and
articles in containers, if required by the Operating Company representative or regulations.
For larger quantity of soils, construct temporary waste piles using plastic liners. Plastic-lined roll-off
bins should be leased for storing this material as soon as possible.
Dispose of oily soils and contaminated articles in accordance with applicable federal, state and local
regulations.
Decontaminate all emergency response equipment used during the incident before storing. See part
4 of this section.
Document and report activities to the Operating Company as soon as possible.
In.
5.4.2
Hazardous Substance Releases
Identify the material and quantity released.
Block off drains and containment areas to limit the extent of the spill. Never use water to disperse
the spill.
Ensure that Personnel Protection Equipment and containers are compatible with the material
released.
Collect and reclaim, if possible, as much of the spill using a hand pump or similar device. Containerize
contaminated soils. Never place incompatible materials in the same drum or other container.
Take a sample of the substance for analysis and waste profiling.
Place a hazardous waste label with appropriate waste code on the drums containing hazardous
waste contaminated materials. Move drum to secure staging or storage area.
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Decontaminate all equipment in 3 contained area. Collect and containerize decontamination fluids.
See part 4 of the section.
Document and report activities to Operating Company as soon as possible.
5.4.3
Equipment Cleaning/Storage
Upon completion of remedial activities, LGI shall be responsible for disposing and/or
decontaminating emergency response equipment. An approved waste management plan must be
followed.
Laney shall be responsible for replacing all spent emergency response equipment prior to resuming
construction activities.
Decontamination rinse fluids shall be collected and managed in the same manner as wastes
generated, including performing necessary analyses.
Reusable personnel protection equipment will be tested and inventoried prior to being placed back
into service.
When site circumstances require alternative approaches to the Environmental Management methods
described herein, the Project Team will collectively evaluate the site specific requirements. Certain
project locations may require special considerations and a revised Environmental Management Plan.
If so, the Project Team will develop the plan prior to mobilizing equipment to the site.
5.4.4
Recyclable Waste
LGI standard HDD Operations employs a mechanical separation process where drilling mud is
cleaned and reused on site. Specialty equipment is provided on each job site and utilized in the
drilling process for recycling of mud as company standard protocol.
All used petroleum products/fuels are stored on site in appropriately rated tanks per industry
standards and disposed of when tanks are full. A certified and licensed third party company is used
for hauling and disposal of used petroleum products perfederal and state environmental regulations.
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6.0
QUALITY PLAN
6.1
QUALITY REQUIREMENTS
Date: 04/23/2019
LaneyXXXLGI
Doc” Number
The overall goal of LGI Quality Plan is to complete every project “right the first time” and in accordance with
its client’s and its own quality expectations. LGI will remain in compliance with Pipeline Contractor’s QA/QC
plan over the course of the project.
LGI has developed and implemented a set of Standard Operating Procedures (SOP’s) that cover almost all
of its field operations. LGI drilling crews are expected to know the SOP’s and follow them as close as practical.
LGI will ensure that its Quality, Safety, Health and Environmental Management Systems are being followed.
6.1.1
STANDARD OPERATING PROCEDURES (SOP’S)
‘
The following list of SOP’s are issued to LGI field personnel:
..
sop Number
Q
CP-001
CP-002
CP-003
{f
‘~
Surveying 3
'- 7’] A
L'
_
_ 7
CP-004 ‘
», ~
°'
,
CP-005
'
, g
CP-007
g
Mobilization
Rig Up
3:?) Drilling Fluid Management
,
CP-006
sop Name
Water Supply
Environmental Management
.V ' D ‘
Drill Pipe Management
CP-008
‘
Pilot Hole (Wireline)
CP-009
Q
Reaming
CP-010
Pipe Side Preparation
CP-011
Swabbing
CP-012
Pipe Pulling
CP-013
Pullback Assistance
CP-014
Rig Down
CP-015
Site Clean Up and Demobilization
CP-016
Installing Buoyancy Control Line
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CONTINUOUS IMPROVEMENT ACTION (CIA)
LGI Project Manager and on-site Superintendent will ensure that Continuous Improvement Actions regarding
materials, equipment, and workmanship are handled in accordance with Procedures. To this end, LGI has
developed a set of Standard Operating Procedures that LGI supervisory staff become familiar with and
reference as a guide. Should issues arise outside of what is considered normal operating conditions, the onsite Superintendent and site staff will be required to identify and report any Continuous Improvement Actions
being undertaken.
Where the continuation of work subsequent to the identification of a non-conformance would be detrimental
to the final deliverable quality of work, the Superintendent shall immediately establish a Hold Point.
LGI Project Manager will evaluate any non-conformance and approve the remedial action to be taken to
control the non-conformance. Any project design concessions shall be agreed upon by the project team and
submitted for approval to the Pipeline Contractor and the Operating Company prior to the continuation of work.
Upon completion of the remedial action, the Project Manager shall verify that materials and workmanship
conform to the requirements before work resumes.
6.2.1
KEY PERFORMANCE INDICATORS (KPls)
The following KPls will be used to evaluate the performance of LGI crews on this project:
No lost time accidents or serious incidents
Ensure housekeeping is maintained to LGI and client standards
Crossings are completed within specified project timeframe
Project is completed within the specified standards and requirements
High level of cooperation between LGI, the Pipeline Contractor and the Operating Company in
achieving a common goal
6.3
I HAZARD IDENTIFICATION AND CONTROL
All LGI field employees are provided with training at the time of employment. LGI training covers the majority
of common safety hazards encountered at the workplace that the individual is to work and include the
following:
Personal protective equipment and clothing
Housekeeping
Moving equipment
Hazardous materials
Confined space awareness
Operator qualification
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While on the Pipeline Project, LGI employees will be made aware through classroom and/or web based
training, and daily Tailgate Safety Meetings of the site-specific hazards that they may be exposed to in the
course of working on the project. In an effort to eliminate future incidents, Administrative Controls such as
Training, LGI Job Safety Analysis meetings, periodic safety audits, and Stop Work Authority serve to identify,
reinforce the safety requirements, isolate and/or eliminate, quantify the severity, and qualify the likelihood of
known hazards.
incident.
This safety culture is designed to prevent the likelihood and mitigate the severity of an
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7.0
HDD INSTALLATION PLAN
7.1
PRE-CONSTRUCTION SURVEY
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Before drilling operations begin, the Pipeline Contractor and/or the Operating Company will conduct a survey
to:
Locate and mark all known existing pipelines
Determine and stake the Entry and Exit points and the HDD center line at 100-foot intervals
Develop a clear line of sight between entry and exit locations
Daylight or expose all existing utilities as required by Operating Company
LGI Superintendent will perform a One-Call (call before you dig). The documented One-Call number is listed
,.
on LGI daily reports.
7.2
MOBILIZATION
In conjunction with the pre-construction survey and pre—rig finstruction actNthe rig spread is
mobilized to site by road transport
7.3
RIG UP
The drill rig will be positioned relative to the Entry point of the HDD alignment. The drilling fluid mixing and
recycling tank will be positioned in close proximity to facilitate safe and easy access and will be plumbed to
the rig, high-pressure mud pump, and water supply. Drilling fluid return pits will be excavated at both the
Entry point and the Exit point locations.
7.4
DOWN-HOLE SURVEY TOOL ROLL TEST
‘ While the drill rig is being set up, the downhole steering probe may be “roll tested” along the proposed
centerline in an attempt to select a more accurate azimuth for steering guidance. Roll test results will be
documented in the daily report generated on the day of the roll test. Magnetic direction readings obtained
from this roll test will be used during pilot hole operations to help calculate the downhole position relative to
the designed alignment.
Before drilling, the steering probe is inserted into the monel (non-magnetic drill collar housing). An electrical
wire is fed from the carriage of the drill rig through the first joint of drill pipe and connected to the steering
probe inside the monel. This wire, commonly called the downhole wire, carries data from the probe to a
computer in the drilling control cab. The wire must be extended each time a joint of drill pipe is added to the
rig during the pilot-hole operation. Once connections are completed the Bottom Hole Assembly (BHA) is
“spudded in” at the predetermined Entry point and a starting point survey is taken. This point is used to
calculate the x, y, and z coordinates of the survey tool with respect to the design profile and alignment.
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PILOT-HOLE SURVEY & GUIDANCE SYSTEM
LGI will provide and maintain instrumentation that will accurately locate the pilot-hole bit, measure drill string
axial and torsional loads, and measure drilling fluid discharge rate and pressure.
During the pilot-hole operation, the Driller and Steering Technician will rely on the magnetic heading, tool
face and inclination information relayed from the magnetometers and accelerometers in the downhole
steering probe. This information will be used for making steering adjustments over the course of the pilothole operation.
A steering probe and interface is used as a secondary method to continuously locate and document the
location of the drill head during the pilot-hole operation. It enables the Driller to guide the drilling assembly by
providing immediate information on the tool face, azimuth (horizontal direction), and inclination (vertical
direction). The secondary tracking system is accurate to +/- 2% of the vertical depth of the completed hole.
A downhole annular pressure monitoring component may be engaged during the pilot-hole operation to
monitor the annular pressure in an effort to reduce the likelihood of an inadvertent return.
The guidance system will be operated by experienced personnel. Layout of the surface coil wires require a
line of sight during the initial survey and layout.
The surface coil wires laid on the ground surface are typically configured such that one leg extends close to
the HDD centerline and the return leg is offset by about half the distance of the depth of drill. Generally, a
wide coil spacing will increase location accuracy. The rectangular wire configuration will be placed along
the drill path wherever practical. It may be necessary to clear a foot traffic path (limited to 3-feet in width)
using hand operated power tools. Large trees will not be removed; only small brush will be cleared. If a
deviation from the construction ROW is necessary, LGI will require written approval from the Pipeline
Contractor and the Operating Company prior to proceeding.
LGI intends to use a Magnetic guidance system for this project. If magnetic interference is encountered and
‘ interferes with the guidance system to the point LGI believes its accuracy is compromised, or if LGI
determines environmental conditions such as large water bodies or structures prevent the ability to lay out a
surface coil, it may be necessary to use a Gyroscopic Steering Tool (GST) “gyro”. A gyro uses optical sensors
that do not rely on magnetics to provide the required downhole survey data. Use of a gyro is a subcontracted
service and subject to availability of the tool.
7.6
PILOT-HOLE DRILLING
The pilot operation begins by using a 12.25-inch diameter drill bit and a bent sub that make up the jet
assembly. Bit style may be tri-cone or fixed cutter. Bit types include milled-tooth (MT), Tungsten-Carbide
Insert (TCI), Polycrystalline Diamond Compact (PDC) and Drag Bit (DB). Drilling fluid flow rates may range
between 100 to 600 GPM depending upon hole geometry, rig capacity, reactions downhole and the necessary
flow characteristics required to maintain the prescribed downhole flow rates. The pilot-hole operation is
carried out continuously in intervals of one length of drill pipe (20-feet on 100k capacity rigs and +/- 30-feet
on maxi-sized rigs). A positive displacement mud motor will be used if the formation encountered cannot be
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penetrated using the jetting assembly. If necessary, LGI may temporarily install a small diameter casing at
the Entry side of the crossing to assist with pilot-hole operations.
The following pilot-hole design tolerances will be specified on the lFC drawings:
Alignment: 5-feet left or right of the designed alignment
Depth: 3-feet above or 10—feet below the designed profile
Length: 15—feet longer or up to 10-feet shorter
Exit Alignment: 5-feet left or right of the proposed exit stake
Exit Angle: up to 2° flatter or 1° steeper than designed
Curve Radius: The pilot hole will be drilled within the tolerances specified on the lFC drawings for each
crossing. LGI will calculate the vertical radius of the drill path over any three-joint drill pipe segment (four-
joint segment for 20-foot drill rods) using the following formula:
Rdrilled = ( Ldrilled / Aavg ) x( 180 / 11)
Where:
Rdrilled = drilled radius over Ldrilled, (in feet)
Ldrilled = sum of lengths of segments drilled, no less than 75 feet and no greater than 100 feet
Aavg ,
= total change in angle over Ldrilled, (invdegrees)
The minimum allowable vertical radius shall not be less than specified on the lFC drawing. If the pilot-hole
deviates outside of the tolerances, LGI will propose a solution to the Pipeline Contractor, Operating Company
‘ and/or its HDD Engineer. LGI will proceed with the pilot-hole only after receiving approval. Based on the
situation it may be necessary to abandon the unaccepted portion of the hole.
Within 24 hours of pilot hole completion, LGI will issue “as-drilled” drawings and data to the Pipeline Contractor
and Operating Company for acceptance. If written acceptance or rejection from the Operating Company
regarding the pilot hole “as-drilled" data is not received within 24 hours of submission by LGI, LGI will assume
acceptance of “as-drilled” data by the Operating Company and commence reaming operations.
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7.6.1
Laney Doc. Number
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TOOLING SCHEDULE
HDD 1
Pilot Hole
Ream 1
Ream 2
Swab
Pullback
Dia.
12.25”
30”
48”
48”
36”
Visc.
50 - 55
60 — 65
60 — 65
60 — 65
60 — 65
Flow
5—12/bpm
7 — 19 bpm
7 — 19 bpm
7 — 19 bpm
7 — 19 bpm
HDD 1
Pilot Hole
Ream 1
Ream 2
Swab
Pullback
Dia.
12.25"
36”
54”
54”
42”
Visc.
50 - 55
60 — 65
60 — 65
60 — 65
60 — 65
Flow
5—12/bpm
7—19bpm
.7—19bpm
7— 19 bpm.
7—19bpm
After scheduled pilot hole is complete, a “swab pass” may commence if determined to clean the hole by LGI
personnel. The swab pass consists of pulling a swab reamer through the previously reamed hole from Exit
side to Entry to clean the hole. The reamer used to swab should be sized larger than the product pipe or
pipe bundle but smaller than the hole diameter to:
1. Assist in verifying stability of the hole
‘
2. Allow for removal of excess cuttings remaining in the hole
3. Reinforce the drilling fluid wall cake
4. Condition the hole with fresh drilling fluid immediately prior to pullback
5. Help confirm that the hole is in a condition to receive the casing pipe
Thepullback process typically begins after completing one or more acceptable swab passes.
7.7
‘ PULLBACK
LGI will provide a pulling head that Pipeline Contractor will weld to the product pipe or pipe bundle. The
Pipeline Contractorwill place the pipe string(s) on rollers for support during the HDD installation. The rollers
will be spaced for adequate pipe support. The Pipeline Contractor will provide all of the required labor and
equipment in order to support the pipeline as it pulled into the bore path, including support at the break-over
point.
The pullback will be a continuous operation until completed, except when joining of a pullback string is
required. Having mid-welds is not recommended due to an increased risk of hole collapse or stuck pipe during
pullback operations.
A reamer and adequately rated pullback swivel are installed between the downhole string of drill pipe and the
pull head that the Pipeline Contractor has welded to the front of the product pipe. The pull head is then
connected to the pullback swivel. In the case of a pipe bundle, pull heads are shackled together or attached
to a plate designed to accommodate multiple pull heads.
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The carriage of the drill rig travels to the top of its rack pulling a joint of drill pipe out of the hole at Entry and
pulling the product pipe into the hole at Exit. As each joint of drill pipe is pulled, continuous pumping of drilling
fluid through jet nozzles in the pullback assembly will lubricate the pipe string and help to keep the hole open.
Once the product pipe is successfully pulled through the hole to Entry the pullback operation is complete.
LDD crews will rig down (disassemble) equipment and move to the next crossing or demobilize from the
project.
7.8
REPORTING
LGI will distribute the daily report documents to the Operating Company and Pipeline Contractor as required.
Reports are typically submitted on the business day following the day of activity.
but”
Upon completing the pilot-hole LGI shall provide a complete tabulation referenced to the drill Entry point that
accurately portrays the pilot hole location, Entry and Exit points and pilot hole profile, including curvature
radii.
8.0
DRILLING FLUID PROGRAM m
8.1
MAKE-UP WATER
\'
\
LGI predominantly uses freshwater based drilling fluids for its Horizontal Directional Drill (HDD) pipeline
installation process. By volume, the freshly mixed drilling fluid is generally comprised of at least 96% fresh
water. Certain make-up water characteristics are required to achieve optimum conditions for the bentonite
based drilling fluid mixture. Once a reliable freshwater source is found, a sample should be collected in a
sterile container and the water tested to determine its pH, chlorides content and hardness. Testing will be
performed using either common water test strips or through titration methods.
. NOTE: Excessive levels of chlorine and other water treatment chemicals can hinder the performance of
and/or render the make-up water unusable.
Desired water properties:
pH
8-11
Total Hardness
Chlorides
Chlorine
8.2
<100 mg/L (ppm)
a?
“
<500 mg/l (ppm)
<150 ppm
DRILLING FLUID COMPOSITION
HDD drilling fluid consists primarily of bentonite and freshwater. Potential additives that may be necessary
include Soda Ash to reduce the total hardness and adjust the pH of the water source. This allows the
bentonite, polymers or other approved products to function at optimal levels, increasing hole cleaning, cuttings
suspension, hole stability, lubrication and other desirable drilling fluid properties. LGI will submit a list of
additives planned for use on the project to Operating Company and Pipeline Contractor prior to mobilization.
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The rheological properties will be monitored and adjusted to best fit the soil conditions encountered and to
maintain positive drilling performance. Appropriate flow rates will be used during the HDD operation in every
attempt to prevent hydraulically fracturing the subgrade material around and/or above the enlarged hole. It is
the intent of LGI that the HDD operation is conducted in a manner to provide a stable hole and prevent the
discharge of drilling fluids to land surface as a result of formation fracturing.
LGI has a Drilling Fluids Engineer (DFE) available to assist during the HDD process. A Drilling Fluids Program
will be employed on this project; however, alterations to the program may be required as a result of site
specific circumstances and subsurface conditions encountered. Deviation from the fluids program will require
approval from the on-site LGI Superintendent and LGI Project Manager and coordination between the DFE
and LGI crew.
8.3
“Va
DRILLING FLUID MANAGEMENT
The DFE will be responsible for the managemeht and testing of the drillingh'uid on all HDD crossings.
Responsibilities will include:
'
’
0
Monitor drilling fluid properties for trends through mud checks and occasional spot checks
0
Continuous communication with driller, LGI superintendent and project manager on mud properties,
performance, volumes and required adjustments
0
Feedback on performance of solids control equipment and any adjustments required to increase
performance
0
Manage and track drilling fluid inventories and forecast inventory needs
0
Place drilling fluid material order recommendations with LDD project superintendent and/or LDD project
manager
0
Volume accounting
3
Volume water used (bbls)
bz‘
Volume mud products used (bbls)
Solids disposal (bbls/hour and bbls per shift)
Fluid loss over shakers
Fluid loss in the hole
Manage water and whole mud transported to rig site and volume received
Manage loading of mud/solids/sludge for disposal and volume of each out (fluids — bbls;
solids/sludge cubic yards)
0
Shaker Screen inventory and placement of order to LGI superintendent and project manager
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9.0
DISPOSAL
9.1
DRILLING FLUIDS AND CUTTINGS MANAGEMENT PLAN
Laney Doc. Number
XXXLGI
Excess drilling fluids generated at each HDD will be hauled to an approved disposal facility or will be land
farmed at an approved site.
All drilled cuttings, sludge and drilling fluid generated from the HDD locations will be tested prior to disposal
depending on the approved disposal facilities regulations, according to disposal site or land farm
requirements, in compliance with environmental regulations, right-of—way, workspace agreements and permit
requirements.
See LGI cost proposal for details of LGI scope regarding transportation and disposal.
In no event will LGI be responsible for the handling of any contaminated fluids,
hydrocarbon bearing soils or drilled cuttings.
If evidence of contaminated soils along the drill path is discovered, LGI will
immediately stop work to notify and consult Operating Company and Pipeline
Contractor for process to move forward.
However, management of
contaminated soils and drilling fluid as described above will in no circumstance
fall under the scope of LGI for this project.
9.2
DISPOSAL OF CONTAMINATED MATERIALS/SOILS NOT RELATED TO DRILLING FLUID OR DRILLED
CUTTINGS
.
1
' .
0
0
0
0
o
0
LGI shall be responsible for the proper disposal of wastes generated by our actions, including
obtaining applicable authorizations, registrations, and/or EPA/State |.D. Numbers. An approved
waste management plan will be followed.
All contaminated articles and soils recovered during a release event shall be properly handled and
stored in approved DOT containers.
All wastes generated as a result of spill response activities shall be analyzed to determine if
hazardous, unless knowledge of contaminant(s) is applied to classify these wastes/spill materials as
hazardous.
Those wastes determined to be hazardous shall be properly labeled, profiled and manifested to an
authorized hazardous waste treatment, storage, and disposal facility.
At no time will hazardous waste be stored on-site for a period exceeding 90 days.
Hazardous wastes shall be stored in a secured location (i.e. fenced, locked, etc.) until such time as
this material is transported off-site.
Non-hazardous, oil-contaminated soils and articles shall be properly disposed at authorized nonhazardous land disposal facilities. While on-site, these materials will be managed in accordance with
the procedure outlined previously, and with applicable federal, state and local regulation.
Depending upon quantity, lined roll-off bins shall be leased to temporarily store contaminated soils
prior to disposal.
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10.0
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XXXLGI
HDD WATER TRANSPORTATION PLAN
The Pipeline Contractor or Operating Company are responsible for locating the freshwater source for the
project. If a municipal source such as a fire hydrant is used, a permit, backflow preventer and meter will likely
be required, the Pipeline Contractor or Operating Company will be responsible for the permit, backflow
preventer, meter, and associated equipment. The placement of pumps and discharge hoses typically require
the Pipeline Contractor and Operating Company approvals as well. In the event discharge hoses must be
placed on property not owned by the Operating Company, additional approvals are generally required (i.e. —
Department of Transportation for pipe along roadways, bridges, etc.).
All water to be used for HDD operations, drilling fluid and rig wash; will be sourced and either transported to
site by tanker truck or plumbed directly to rig site via hoses to hydrant. Water will be stored on site in 500 bbl
frac tanks.
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11.0
HDD EQUIPMENT CONTINGENCY PLAN
11.1
CONTINGENCY PLANS
Date: 04/23/2019
Laney Doc. Number
XXXLGI
In the event LGI operations needs to deviate from planned execution (i.e. stuck carrier pipe, loss of tooling
down hole, damaged coating on product pipe). LGI will submit a contingency execution plan when the need
arises. The contingency execution plan will be formulated to the specific issue at hand, where it is along the
bore path and the best method to resolve the issue based on industry standard SOP, experience and
consultation with LGI senior management.
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AS-BUILT DRAWING PLAN
LGl will provide As-Built Drawings in accordance with SENTINEL MIDSTREAM AS-BUILT SURVEY
SPECIFICATION, using survey data obtained during the pilot hole phase of the HDD process.
Ianey
Sentinel Midstream
42-inch ICWW Crossing
Direct Pipe® Installation Plan
Project:
Sentinel Midstream ICWW Direct
Change
No.
Change
Type
0
. .
Description of Change
Exam Ie DP Execution
Installation
Requestor
Date
Submitted
04/23/19
Date
Approved
Signature
Comments
k n e y
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
Table of Contents
Sentinel Midstream ...................................................................................................................................................................
42-inch ICWW Crossing .............................................................................................................................................................
Direct Pipe“ Installation Plan .....................................................................................................................................................
Introduction ..............................................................................................................................................................................
Direct Pipe® Overview ...............................................................................................................................................................
General Approach ................................
Direct Pipe® Equipment .......................
MTBM Operational Specifications ....................................
Microtunneling Navigation/Guidance System ..................
Pipe Thruster .....................................................................
Direct Pipe® Launch Seal .......................................................................................................................................................
Microtunneling Control Container Specifications and Setup ................................................................................................
Slurry Separation Plant .........................................................................................................................................................
Spare Parts and Equipment ...................................................................................................................................................
Safety 7
Pre-Construction Safety Orientation .....................................................................................................................................
Construction Safety ...............................................................................................................................................................
Laney Personnel and Project Organization ...........................................................................................................................
Hours of Operation ...........................................................
Protection of Underground Facilities .........................
Direct Pipe Installation Process ...................................
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pre-Installation Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mobilization ......................................................................
Thruster Setup and Anchoring ..........................................
Proposed Overcut ...............................................................................................................................................................
Umbilical System — Supply Lines and Communication ........................................................................................................
Commissioning of the System .............................................................................................................................................
Preparation of the MTBM for Launch .................................................................................................................................
Installation of the Clamping Unit ........................................................................................................................................
Launching of the MTBM ......................................................................................................................................................
Slurry Recycling System .......................................................................................................................................................
Control Container ................................................................................................................................................................
Survey and Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tunnel Lubrication and Slurry . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Welding of Additional Pipe Strings...
..................
Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pushing the Pipe Out and Disassembly...
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Observation During DP Operations .........................................................................................................................................
Reporting.................................................................................................................................................................................
Slurry and Cuttings Disposal ....................................................................................................................................................
Rig Down and Demobilization .................................................................................................................................................
Contingency Plan .....................................................................................................................................................................
Direct Pipe Equipment Failure ............................................................................................................................................
Product Pipe Becomes Lodged in the Hole .........................................................................................................................
Buckling of Casing Pipe / Loss of Tooling ............................................................................................................................
Out of Tolerance Trajectory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Fluid Circulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hole Collapse ......................................................................................................................................................................
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
List of Appendices
Appendix A: Drawings
Appendix B: Preliminary Project Schedule
Appendix C: Standard Specification for AVN800XC
Appendix D: Navigation System Technical Data Sheet
Appendix E: Pipe Thruster Specification
Appendix F: Cleaning System Information
Appendix G: Example List of Spare Parts
Appendix H: MTBM Test Plan
Appendix I: Fluids Program and SDSs
Appendix J: Example Daily Reporting Format
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
INTRODUCTION
Laney Directional Drilling Co. (Laney) has prepared this execution plan for Sentinel Midstream Company
(Sentinel) to present Direct Pipe® (DP) methodology as applied to the Intracoastal Waterway (ICWW)
Crossing on the proposed 42-inch pipeline project. Laney will operate in general accordance with this
procedure for the installation of a 42-inch-diameter steel pipe located in Brazoria County, Texas (the
”Work”). In order to commence the work, Laney, a Houston, Texas based construction and engineering
company, will be contracted by Sentinel to complete the DP installation.
DP is a registered trademark of German based company Herrenknecht AG (HK), the company that developed
this method of pipeline installation. The unique technology behind DP has opened up new possibilities in
the trenchless industry by combining the advantages of microtunneling and horizontal directional drilling
(HDD). In a single pass, subsurface material is mechanically excavated while the prefabricated pipeline is
installed along a predetermined profile. Because the annular fluid pressure required downhole is
substantially lower than HDD, this method of construction greatly reduces the potential for inadvertent
returns and can be used in nearly any ground condition.
The procedure described in this plan is general in nature as the proposed crossing has not yet been fully
defined. Table 1lists the crossing included in this project and the length.
Table 1
Crossing Name
42” DP Crossing ICWW
Length (feet)
2,700
Trenchless methods of pipeline installation are utilized in areas where traditional open cut excavations are
not feasible because of environmental or logistical reasons. The first DP installation was completed in
September, 2007 under the Rhine River in Worms, Germany. While DP has a relatively short history
compared to trenchless technologies such as HDD and microtunneling, Laney has completed eleven DP
installations to date with pipe sizes ranging from 36-inch to 48-inch, lengths of up to 5,000 feet, and designs
incorporating horizontal curves.
0 1,423-ft crossing (42-inch product pipe)
0 3,505-feet crossing (48-inch casing pipe)
0 1,885—ft crossing (42—inch casing pipe)
0 928—ft crossing (36—product pipe)
0 1,777—ft crossing (36—product pipe)
0 1,610—ft crossing (36—product pipe)
0 2,098-ft crossing (42-inch product pipe)
0 2,098—ft crossing (42—inch conduit)
0 1,836—ft crossing (42-inch product pipe)
0 856—ft crossing (42” casing pipe)
0 5,000-ft crossing (42” product pipe)
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
DIRECT PIPE® OVERVIEW
The DP technique will commence with a single pass installation for the 42-inch steel casing. A microtunnel
boring machine (MTBM) is used to mine a tunnel along a pre-determined path while the steel pipe is used
to transfer the thrusting force required for the MTBM to advance through the formation. The MTBM will be
steered using two guidance systems with efforts to keep the projected path as designed. First, a Gyroscopic
Universal Navigation System (UNS) will be used to control the steering capabilities and survey collections in
regards to the left and right direction in relation to the designed drill path. Second, a hydrostatic water level
(HWL) is used to control the grade in accordance to the designed profile. Laney may opt to employ a survey
prism and total station set-up to perform an ”alignment control survey” of the tunneled path at any given
time over the duration of the project.
GENERAL APPROACH
Initially, Sentinel or its Contractor will notify applicable regulatory agencies of its intent to complete
excavations and underground work. Laney will submit a one—call utility locate ticket and prior to performing
any work on the project. Laney and any other subcontractors planned for the work will participate in a site
specific safety orientation.
Laney will provide the necessary labor, tools, materials, equipment, and expertise specific to the DP process.
Over the duration of each DP project Laney will utilize HK to provide support for items such as daily
consumables, specialized labor, spare parts such as sensors, pumps, seals, etc.
Upon receipt of notice to proceed, Laney will mobilize crew and equipment to begin preparatory work
relative to the DP launch pit excavation and equipment layout. The project warehouse (storage and office
location) will be set up and the yard will be prepared to take delivery of the required materials.
A preparatory work crew will mobilize to the site, implement any traffic control plans and begin preparing
the workspace for handling the all-weather travel of heavy equipment. Laney will work to ensure the access
is adequately constructed in order to handle the components of the DP spread. Laney will require
approximately 30-feet wide access roads and a site pad that is capable of supporting loads weighing up to
120,000 lbs. This is typically accomplished by leveling a work space and installing appropriate matting or a
hard—stand.
Once the entry pad is constructed, Laney will begin moving equipment to the jobsite. Laney’s surveyor will
verify coordinates are in accordance with the project designs and lay out corners of the launch pit and
thruster foundation per the design drawings. Laney will then construct the launch pit in preparation for
setting up the microtunnel boring machine (MTMB) and ancillary equipment. During the site preparation
and setup phase crews will work day shifts only (10-12 hours per shift).
Once the launch pit is prepared Laney’s surveyor will mark the location of the thruster foundation system.
The foundation system typically consists of driven pipe piles, sheet piling or a thrust block capable of
withstanding the anticipated installation loads. A work platform is constructed around the foundation
system.
Laney or its designee will have the overall responsibility of constructing the 42-inch steel pipe string before
DP equipment setup is complete, and supporting the pipe using stacked shipping containers, cranes, or
other structures as needed to handle the pipe safely. Laney or its designee will provide a ”break-over”
drawing which outlines the height and vertical radius will be required to support the 42-inch steel pipe
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
the operation in a safe manner and provide necessary equipment to ensure the pipeline
DIRECT PIPE® EQUIPMENT
This section lists the equipment that will be used for the installation.
MTBM OPERATIONAL SPECIFICATIONS
Laney may employ the AVN800XC MTBM, manufactured by Herrenknecht, AG. A standard specification for
this machine is attached in Appendix C. The assembly for the MTBM will additionally include a 42-inchdiameter Direct Pipe Can 1 with a 90 kW Power Pack, Conical interface ring and Weld-On Adaptor. Figure 1
below shows a 42—inch-diameter AVN800XC MTBM setup for the DP application for reference.
Telescopic
Station
Power Pack
for Telescopic
Station
Power Pack
for Cutter
Head
MTBM
Cutter
Head
Figure 1: DP Machine
MICROTUNNELING NAVIGATION/GUIDANCE SYSTEM
Laney will use the UNS Integral Module for the steering and guidance ofthe tunneling operation. A Technical
Data Sheet for the guidance system is attached in Appendix D. Laney will employ the gyroscopic UNS.
Outfitted with a gyroscopic UNS, line-of-sight is not necessary between the components. The north-seeking
gyro compass will be permanently mounted inside the MTBM. Upon request, it calculates the direction of
true North as a reference to the MTBM axis. The current position o f t h e MTBM will be calculated via coupled
navigation. Hydrostatic Water Leveling (HWL) will be used to obtain the elevation data.
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
Laney reserves the right to perform additional survey work by using a total station and survey prism as an
”alignment control survey” in comparison to the primary guidance system described above. By employing
the total station and gathering periodic survey data inside the pipe to the tunneling head, Laney will be able
to determine the precise alignment of the tunneled path throughout the operation. The initial alignment
survey will be conducted within the first 300 to 400-feet of the tunneling operation. In order to access the
pipeline to make the survey, entry can be obtained through the back of the back string pipe.
PIPE THRUSTER
Laney will use the HK750PT pipe thruster manufactured by HK to install the steel pipe. The maximum
push/pull capacity of the pipe thruster will be 1.65 million lbs. The standard specifications and dimensions
of the pipe thruster and its components are provided in Appendix E. The thruster assembly will consist of a
left and right, ”A-frames", a clamping unit, the transport plate for the clamping unit, clamping inserts, a
carriage, a launch cradle, an extension for the launch cradle, and an anti—roll device. Figure 2 shows the
thruster assembly that will be used for this project.
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/ ?
Figure 2: Direct Pipe Thruster Assembly
DIRECT PIPE® LAUNCH SEAL
Laney will use a 42-inch-diameter DP launch seal supplied by HK. The launch seal is outfitted with a neoprene
seal to resist against groundwater, soil, and bentonite slurry inflow as the MTBM and 42-inch casing pipe
pass through the launch seal. Figure 3 illustrates a launch seal assembled and affixed to a launch pit.
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
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Figure 3: Launch Seal Assembled and Affixed to the Launch Pit
MICROTUNNELING CONTROL CONTAINER SPECIFICATIONS AND SETUP
Laney will employ a control cab designed specifically for the DP System, manufactured by HK. The main
features of the control cabin are:
0 Containerized with separate compartments for the Operator
0 Window in the operator compartment for site observation
0 Ergonomic layout controls with industrial PC and color monitor(s) for full online visualization of all
operating parameters
0 Siemens S7 PLC system
0 Data logger capable of recording all drive parameters for output to printer in either tabular or
graphical form
0 Capable of operating two sets of pipe thrusters, if required
0 Operator control panel display includes:
o
o
o
o
o
o
o
o
o
o
o
Cutting wheel rotation speed and direction
Cutting wheel drive operating pressure
Slurry pressure at the cutting head
Pressure and stroke of the steering cylinder
Bypass valve system position and operating pressure
Slurry line flow rates
Slurry pumps rotation speed
Pipe thruster(s) pressure and advance speed
Pressure and stroke (optional) of the telescopic station
Hydraulic oil temperature
Start and stop controls of all equipment
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
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o The safety features of the control panel include:
o
o
o
Emergency stop control
Automatic shut down if oil temperature is too high, oil level is too low, or oil cooler trip
Telephone to the machine for personnel communication between the control cabin and the
MTBM
o The recorded data may include:
o
o
o
o
o
o
o
o
o
Date and time
Total drive length
Stroke steering cylinders
Vertical deviation
Roll
Vertical and horizontal angles of the cutting head
Cutter—head face load
Thrust load
Cutting wheel torque
Figure 4 shows a typical display inside the control cabin. The control cabin will be set up and positioned to
ensure that the Operator has full visibility of the entry pit.
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Figure 4: Typical Display Inside the Control Cabin
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
SLURRY SEPARATION PLANT
Laney will employ a Drilling Fluid Recycling System for this project. Appendix F provides the technical
specifications of a cleaning system that may be selected for the project. The important features of the
cleaning system include:
o 300 BBL (US Barrels) Tank
0 2 Derrick FLC 503 Scalping Shakers — Minimum 40 Mesh Size
0 3 Derrick Hydro-cyclones De—sander Cones — 1,000 gallons per minute (GPM) capability
0 Minimum de-sander mesh size of 100
o 16 Derrick Hydro-cyclones De-silter Cones — 1,000 gallons per minute (GPM) capability
0 Minimum de-silter mesh size of 140
o Flo—Line Primer
Laney has intentions of using a centrifuge in conjunction with the cleaning system with efforts to remove
fine particles from the slurry.
SPARE PARTS AND EQUIPMENT
Laney will keep adequate spare parts on site for general repairs and maintenance of the DP and ancillary
equipment. Typical spare parts kept on site include: fittings, couplers, sensors, power cords, communication
cords, power control modules, HWL line, electric pumps, suction/discharge plumbing, and interface
components. Laney and HK both have equipment yards located in Houston, Texas which stock spare parts
for support and DP equipment. An example list of spare parts is included in Appendix G.
SAFETY
Safety is Laney’s number one priority. The Work will be carried out according to the Site Specific Safety Plan.
Laney will perform the Work in a manner to maximize safety and reduce exposure of our employees and
equipment to hazardous and potentially hazardous conditions, in accordance with all applicable safety
standards.
Laney will work closely with the Sentinel to adhere to whichever organization has the most stringent safety
requirements, but certainly no less than Laney’s own requirements. It is anticipated that Safety Leaders
from each company involved in the Work will meet to review all site specific safety requirements before
Laney’s mobilization of equipment. The output of this meeting will be incorporated into Laney's Site Specific
Safety Plan for implementation.
Laney will also perform the DP in an effort to minimize ground movement, prevent the subsidence of the
surface structures and utilities near the microtunneling site, and protect the integrity of the pipe.
PRE-CONSTRUCTION SAFETY ORIENTATION
Laney has its own Safety Orientation program that employees are required to attend. Laney crew members
will attend any site specific safety orientation provided by Sentinel. All visitors and subcontractors will
attend the safety orientations and adhere to the site specific safety requirements, unless determined
otherwise by the Sentinel.
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
CONSTRUCTION SAFETY
Before commencement of any operating shift, Laney crews will complete a Job Safety Analysis (JSA) for the
work planned for the shift. If the planned work changes a new JSA will be performed. The JSA includes tasks
to be performed during the shift, identifies potential risks, and provides a discussion with crew members to
mitigate the risks. It is anticipated that Sentinel Laney may also hold weekly tailgate meetings on the subject
manner related to our operations that are assigned by their respective Safety Departments.
During launch pit construction Laney will install fall protection in accordance with OSHA standards. In
locations where excavations exceed four feet Laney will install a rail capable of withstanding 220 lbs. around
the top of the excavation. This can be done by welding angle steel sections, spaced approximately every 10
to 15—feet on top of the pit walls. A 3/8-inch-diameter wire rope is run through each angle section and
secured using a wire turnbuckle.
If necessary, a dewatering system will be installed to prevent water flow into the launch pit. Depending on
the subsurface soil conditions, a deep well or well-point system may be installed on the outside ofthe launch
pit.
In the event that alignment control survey data is needed, or repairs to the MTBM or any part of the
umbilical system are necessary, entry into the pipeline will be required. Entrance into the pipeline will be in
accordance with 29 CFR 1926.800 and 29 CFR 1910.146. The primary requirements of the entry procedure
include:
0 An emergency rescue team will be on—site
o A ”confined space” entry permit will be completed before each entry
0 An attendant will maintain communication with the authorized entrant(s)
0 Air quality inside the pipe will be tested and evaluated before each entry and monitored for the
duration of the entry
0 Constant ventilation inside the pipe by feeding compressed atmospheric air inside the DP machine
0 Emergency respirators provided to authorized entrants for use in the event of an emergency escape
Laney will have a third-party safety team on site to assist with confined space entry permits. The third-party
will provide competent personnel to perform a confined space rescue should it be necessary. The thirdparty personnel will also perform air quality checks and rescue equipment inspection(s) prior to an entrance.
A Site—Specific Confined Space Entrance Plan will be available prior to any human occupancy within the steel
pipe.
LANEY PERSONNEL AND PROJECT ORGANIZATION
The DP will be managed in joint effort between the Laney Superintendent Laney Project Manager. Laney
will have an on-site Superintendent who will be the direct point-of—contact during daily operations. Laney’s
crew will consist of approximately 12-14 people per shift, including skilled labor provided by HK. Laney will
maintain qualified personnel on duty to observe, supervise, and operate the equipment. A Drilling Fluids
Engineer will be available to assist the Superintendent with fluid program management, and may make
periodic site visits to the project.
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
HOURS OF OPERATION
Proposed operating hours are from 7:00 AM to 7:00 PM six days per week during set—up/rig-up of the DP
equipment. Once tunneling begins, Laney will operate 24-hours per day until the completion Of the
installation. At that point Laney crews will revert back tO the 7:00 AM to 7:00 PM, six days per week schedule
for disassembly and packaging of equipment for demobilization. Laney will notify Sentinel if a deviation from
this schedule becomes necessary.
PROTECTION OF UNDERGROUND FACILITIES
Laney will undertake the following steps prior to commencing DP operations:
0 Contact the utility location/notification service for the construction area (see One-Call below under
Pre-Installation Survey)
0 Positively locate and stake existing lines, cables or other underground utilities including exposing
(pot-hole) any utilities, which are located within 15 feet of the designed drill path
DIRECT PIPE INSTALLATION PROCESS
SITE PREPARATION
An all—weather vehicle access will be prepared to the launch site capable Of withstanding 120,000 lbs. A
level, hard standing work area and equipment ingress or ”hard stand” will also be required for the DP
operation.
PRE-INSTALLATION SURVEY
Prior to installation Of any equipment Sentinel or Laney will:
0 locate and mark all known existing pipelines and utilities
0 survey and stake Launch and Reception points and centerline at 100—foot increments where
possible
0 clear a 3—foot wide line Of sight path between Launch and Reception locations, if possible
Laney will submit a One—Call utility locate request for its scope of work. The documented One-Call number
will be recorded on the Laney daily report.
Laney’s pre-installation survey will consist Of establishing the line, grade, and the angle of the thruster along
with the MTBM as the tunneling operation is started.
MOBILIZATION
The DP equipment spread will be mobilized via road—transport from Houston, TX to the project site in
Brazoria County, Texas.
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
THRUSTER SETUP AND ANCHORING
The thruster may be setup inside the launch pit that is approximately 25—feet wide x 80—feet long and 10feet deep, to be determined during detailed design. A 250-ton crane, telescopic fork-lift and excavators will
be used to support the DP equipment setup. Refer to the proposed plan and profile drawing in Appendix A
for a diagram of the launch pit. The thruster frame will be bolted together and anchored using driven pipe
piles, sheet piling or a thrust block capable of withstanding the anticipated installation loads.
PROPOSED OVERCUT
Based on anticipated geotechnical data provided, Laney anticipates employing a soft ground cutting wheel
with a cutting diameter of 44-inches.
UMBILICAL SYSTEM — SUPPLY LINES AND COMMUNICATION
In orderfor the MTBM to operate, an umbilical system is assembled in separate sections and is placed inside
the 42-inch steel pipe. This process is carried out with precise measurements under the supervision of
experienced personnel.
Lines connected to the control container include:
o Data/communications cable
0 HWL hose for the guidance system
Lines connected to the control cabin will be positioned in a safe manner to prevent them from being
damaged by moving equipment. Crew members will visually monitor these lines to ensure that they are not
damaged during the operation.
Lines connected to the Fluid Recycling System include:
o Slurry feed and return lines
o Bentonite lubrication hose
Lines connected to the Power Pack include:
0 Breathing air hose
0 High pressure water line
0 Waste water pump hose
0 Power cable for the cutting head
0 Power cable for the general supply of the MTBM
0 Power cable for the slurry pumps
0 Wiring for radio communication system
Lines inside of the pipeline:
0 Steel slurry feed line
0 Steel slurry return line
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
0 Steel slurry lubrication line
0 Waste water pump hose
0 Breathing air hose
0 High pressure water line
0 HWL hose
0 Data cable
0 Power cable for the cutting head
0 Power cable for the general supply of the MTBM
0 Power cable for the slurry pumps
0 Wiring for radio communication system
As the pipeline is advanced along the tunnel path, the umbilical lines will lay out of the end section of the
pipeline. It may be necessary to support the umbilical lines to prevent damage.
Ideally, all of the supply and communication lines described above will be installed inside the pipeline in a
manner that enables them to be easily repaired. Steel cradles constructed with rollers are designed to hold
each line in an efficient manner. This is important in order to maximize the space inside of the pipeline to
make an entry safe and comfortable. The rolling steel cradles also construct a rail way when fastened
together. Laney weld a ”Loading Capsule” onto the end of the 42-inch steel pipe. The loading capsule is a
section of 42—inch steel pipe that has been cut in half which provides easy ingress and egress for making up
the umbilical sections and for human entry. On the loading capsule, approximately 30—foot sections of the
umbilical lines will be constructed on the rolling steel cradles which are spaced approximately 30-feet apart.
When a section is prepared, the lines are pushed into the pipeline with an excavator and the crew will
prepare the following section until the umbilical lines have been loaded into each pipe string.
1w
-- -
6,;
Figure 5: Loading Capsule, Cradle, and Umbilical Lines
A Machine Slurry Return Pump is installed inside the pipe to provide the pressure needed to remove cuttings
from the cutter head. A hydraulic feed line cooler is placed inside the pipeline behind the MTBM before the
trailing tube is welded to the pipeline. The coolers are assembled on similar rolling brackets. Additional
slurry pumps will be installed in—line at a distance of approximately 1,000—feet away from the first pump
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
located near the MTBM. Laney may also install a ”booster” pump in the loading capsule to provide additional
pumping capacity.
COMMISSIONING OF THE SYSTEM
When all of the components have been connected and powered up, the operator will test the system tO
make sure all components are functioning. The tests will include inspecting and checking all of the hydraulic,
electric, and pneumatic mechanisms by activating all components of the MTBM. The steering cylinders will
be moved and the pressures will be visually inspected. The hydraulic pumps will be tested and the pressures
will also be visually inspected. When the Operator has tested all Of the functions of the MTBM, the unit will
be prepared to launch. Refer to Appendix H for a detailed explanation of how Laney will commission each
division of the MTBM system. Laney considers the commissioning phase of the project a critical task in the
overall project schedule. At this point, any repairs or adjustments are made prior to launching the MTBM
because the machine can be accessed on the surface.
PREPARATION OF THE MTBM FOR LAUNCH
Once the umbilical lines have been installed in each pipe section the MTBM is prepared for launch. The 42inch steel pipe is positioned in a location where it can be moved easily in the direction Of the launch pit. This
is generally accomplished by supporting the break-over section of the pipeline with Side-booms and cranes,
and the tailing section will rest on steel pipeline rollers Spaced appropriately. With the 42-inch diameter
String of pipe placed directly behind the launch pit in a straight section, the pipeline will be advanced to the
trailing tube and welded to the product pipeline. After this Step, crew members connect the umbilical
components between the pipe and the trailing tube.
Laney crew members will attach the MTBM to the power pack (power pack iS commonly referred to as ”Can
1”). This is accomplished by sliding the two units together and tightening the locking brackets located inside
the MTBM and power pack. Then they are placed on the thruster cradle. Laney will advance the 42-inch
Steel pipe and align of the trailing tube and power pack. Once aligned, the trailing tube will Slide together
with the power pack. Crew members will then tighten the locking brackets located inside of the trailing tube
and power pack to complete the connection. If for any reason a crew member has to enter the MTBM
assembly, external access panels can be opened to provide access. This prevents a crew member from
traveling through the entire pipeline to enter the MTBM. When preparing to launch the MTBM assembly,
the access panels will be sealed and locked and the only point of ingress is from the tail end of the pipeline.
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LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
The launch pit may be shored by steel sheet piling at the face and sidewalls, as described above. The
approach side of the pit (back side that receives the back string) will be sloped at a n angle to assist with the
break-over of the steel pipe. All excavations on the project will be completed in accordance with the Site
Specific Safety Plan. The pipe is strung out on the launch side with rollers spaced in intervals appropriate to
withstand the loading of the 42-inch steel pipe and internal umbilical lines, keeping in mind the bearing
capacity of each roller. Once the MTBM is launched, Laney will perform a survey check of the navigation
system along the tunnel path to verify that the guidance/tracking of the pipeline being launched along the
pre-determined bore path is accurate (secondary check/quality control measure l’Hold Point”).
INSTALLATION OF THE CLAMPING UNIT
The clamping unit of the pipe thruster is lifted with a crane and lowered into place between the two
hydraulic cylinders located on the base of the thruster. The weight of the clamping unit for the HK750PT is
83,600 lbs. A hydraulic opening cylinder opens the clamp. The clamp is lowered onto the steel pipe.
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DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
J31
'JA;
"
.
Figure 7: Installation of the Clamping Device
When the clamp is positioned on the pipeline the closing cylinder closes the clamping unit. Clamping plates
located inside the clamping unit are hydraulically extended and the clamping device becomes fixed onto the
pipeline. When the clamp is in a fixed position, the hydraulic thrust cylinders are set into the corresponding
launch angle, extended and aligned to the clamping device where pins are inserted to secure the unit.
LAUNCHING OF THE MTBM
The launching procedure is critical to ensure the cutter head does not damage the launch seal. This process
will be closely monitored by the Operator and all personnel in the launch pit. When the machine passes
through the launch seal, the entire system will be commissioned and tunneling will commence. At this
particular stage, it is critical to monitor the flow pressures as the MTBM is advanced into the subsurface
around the launch seal. This process is critical in order to prevent blow outs to the surface or inflow into the
launch pit directly through the launch seal.
The Operator continues the DP tunneling operation upon a successful launch. The stroke length of the thrust
cylinders is approximately 15—feet. When the cylinders have been fully stroked, the clamp is released from
the steel pipe. The thrust cylinders are retracted in preparation for resetting the clamping device onto the
steel pipe. Once the clamp is fixed to the steel pipeline, the DP tunneling operation continues by applying a
thrusting force through the steel pipe and advancing the MTBM along the proposed tunnel path.
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DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
1-". . __
_
,
.
Figure 8: Direct Pipe Installation With Support
SLURRY RECYCLING SYSTEM
The slurry recycling plant is positioned near the middle ofthe longest string of product pipe, as indicated on
the equipment layout drawing. By placing the reclaiming equipment in this vicinity it reduces the length of
the slurry lines and pump pressures are subsequently reduced. The bentonite lubrication pump is also
positioned near the recycling equipment. The separation equipment selected for the project will be capable
of sufficiently cleaning the slurry volumes required for this installation.
15
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
16
k n e y
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
CONTROL CONTAINER
The control container is positioned beside the launch pit, in order to provide a clear view for the Operator
to see the MTBM and pipe thruster. Refer to the equipment layout drawing for the specific location for this
project. The Operator will have a clear line of communication and sight of the pipe thruster and clamping
unit at all times.
Figure 10: Control Container Placement
SURVEY AND GUIDANCE
Laney will at all times provide and maintain instrumentation that accurately locates the MTBM, measures
the cutter head axial and torsional loads, the thruster loads, and the drilling fluid discharge rates. A log of
the recorded readings will be maintained and will become part of the ”As—Built” information supplied to the
client within 30 days after the completion of the project.
The UNS will monitor the line of the tunnel throughout the tunneling operation. A hydrostatic water level
will be used to monitor the grade of the tunnel. Laney will perform one planned ”alignment control survey”
17
k n e y
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
prior to making the first tie-in weld. Additional control surveys may be taken based on the actual operations.
All of the operating information will be provided to the project team in the Daily Reporting.
TUNNEL LUBRICATION AND SLURRY
The fluids program will consist of two different systems: Lubrication System, and a Slurry System. The
lubrication system will fill the annular space between the pipeline and the tunnel wall. The lubrication fluid
provides lubrication for the pipeline installation and also supports the tunnel wall. The slurry system will be
used to control the temperature of the cutter head and transport the cuttings to the slurry recycling plant
located on the surface. Appendix I provides the proposed fluids program along with the Safety Data Sheets
(SDS) of the possible fluids Laney has taken into consideration for this project. Laney will prepare the slurry
fluid in a 500—BBL mixing tank and the tunnel lubrication fluids in a 300-BBL mixing tank. Adequate fresh
water will be hauled to the jobsite from an approved local source. Laney intends to use approximately
30,000 — 40,000-gal of water per operating shift. The optimum performance of fresh water fluid systems is
partially based on control of the water pH. The effectiveness of bentonite and polymers is enhanced in an
alkaline environment. Prior to mixing bentonite or polymers, the pH of the make-up water is adjusted to 8.5
to 9.5 with Soda Ash. The hardness of the make-up water is another controlling factor in the mixing ability
and effectiveness of all drilling fluids. The single largest contributor to total hardness is the divalent calcium
ion. For our purposes, hardness is referred to as calcium hardness. Excessive calcium hardness, above 100
parts per million, retards the hydration of bentonite and polymer products. Average water hardness in the
United States, as reported by the USGS, is 250 ppm. Treating out hardness is a necessity for optimum mixing
efficiency and effectiveness of drilling fluid products. Fortunately, treating out calcium only requires the
addition of Soda Ash to the make-up water which also increases the pH as described above.
WELDING or ADDITIONAL PIPE STRINGS
If the workspace is not long enough for the 42—inch steel casing to be welded in one complete section, midwelds will have to be made. The pipe segments will be positioned in accordance to the equipment layout
drawing to be completed during the detailed design phase. Prior to making the weld Laney will prepare the
umbilical lines by making all of the required connections by aligning the two sections of 42-inch steel pipe.
Once connections to the umbilical are made, the system is tested for proper operation. At that time, Laney
will align and clamp the two sections of pipe and make the mid-weld.
RECEPTION
Access to the reception area should be an ”all weather” board road or similar, capable of withstanding
heavily loaded transporters (minimum 120,000 lb. capacity). The hard stand should be a cover of gravel,
wooden mats, or other suitable materials. Although the reception side is not accessed for the majority of
the DP operation, it will be accessed to retrieve the MTBM. Before the MTBM exits the ground, Laney will
excavate a rectangular reception pit within the allowable space as shown on the design drawing. Laney crew
members on the reception side will be in communication with the tunneling Operator as the MTBM is
approaches the reception pit.
18
k n e y
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
PUSHING THE PIPE OUT AND DISASSEMBLY
When the MTBM enters the reception pit fluid pumps are deactivated and the pipeline is thrusted to a point
where the MTBM and trailing tube can be retrieved. Crew members will disconnect the umbilical lines and
remove the MTBM. The unit is then loaded onto a trailer and hauled back to the entry site or laydown yard.
Figure 11: Exit Pit
Laney crew members then extract the umbilical lines from inside of the pipe and store all of the items in the
appropriate containers. Umbilical lines are removed from the pipe by reversing the sequence by which they
were installed. An excavator is used to retract each section of the umbilical as the crew disconnect the lines
and fittings. This process is repeated until all components of the system are removed and stored.
19
k n e y
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
OBSERVATION DURING DP OPERATIONS
During DP tunneling operations, designated personnel will periodically survey and monitor the pipeline
route for any surface release of slurry or lubricating fluid. The following will apply:
0 Designated personnel will be trained on what to watch for and the importance of timely detection
and response to any release of fluid
0 Personnel will have an appropriate means to communicate with the Superintendent or Tunneling
Operator during observation periods
0 Laney Superintendent will have the authority to order installation of containment structures when
needed, and to require additional response measures
REPORTING
Laney will submit a daily activity log, survey tabulation sheets, and drilling fluid test reports to the assigned
project representative on the next business day following a day of activity. During tunneling operations the
project representative will have access to survey data, cutter head axial and torsional loads, thruster loads,
and the drilling fluid discharge rates upon request. Refer to Appendix] for examples of Laney’s Daily Reports.
Laney will provide the following project close out information within 30 days after the completion of the
crossing:
o As-built drawing showing the drill profile alignment, Entry point, Exit point, and deepest point
0 Data recorded during tunneling
SLURRY AND CUTTINGS DISPOSAL
Laney will handle transportation of slurry and cuttings for disposal within a 10-mile radius of the jobsite.
Estimated quantities are as follows:
Crossing Name:
Cuttings (Cubic Yards):
Drilling Fluids (Barrels):
ICWW Crossing
TBD
TBD
RIG DOWN AND DEMOBILIZATION
Upon successful completion of the DP crossing, Laney will rig down each component of the thruster and
ancillary support equipment (generator, power pack, operator console) in preparation for demobilization.
A 250-ton crane (or equipment of equivalent capacity) will be required to rig down equipment. Items will
be placed on trailers and secured for road transport.
20
k n e y
LANEY DIRECTIONAL DRILLING CO.
DP Example Installation Plan
Sentinel Midstream Company
42-inch ICWW Crossing
CONTINGENCY PLAN
Laney will prepare following contingency plans for the situations addressed below:
DIRECT PIPE EQUIPMENT FAILURE
Laney will employ an MTBM manufactured by HK and keep an adequate stock of spare parts to repair
general equipment failures. In some situations, parts may have to be imported from Germany or other HK
locations. In these circumstances, Laney will use the most effective means to expedite the required part(s).
PRODUCT PIPE BECOMES LODGED IN THE HOLE
Laney will meet and decide with the Project Team for the best direction tO proceed by either trying to
continue with pushing/pulling the pipe section by implementing a plan that includes some form Of pullback
assistance.
BUCKLING OF CASING PIPE / Loss OF TOOLING
If the steel product pipe buckles from the thrust force applied during tunneling operations, Laney will
attempt tO extract the pipe. If an extraction is not possible, Laney will make efforts tO construct a rescue
shaft to retrieve the MTBM, if possible.
OUT OF TOLERANCE TRAJECTORY
Laney will follow best practices to keep the tunneling Operation within specification. Should the survey data
captured indicate that the tunneling Operation is out Of tolerance, Laney will cease Operations and notify
the Project Team. If it is acceptable to Sentinel, Laney will proceed forward with efforts to ”steer” back to
the proposed alignment. If not, Laney can retract the pipeline and attempt to make corrections.
Loss OF FLUID CIRCULATION
Laney has maintained a one-hundred percent success rate on eleven Direct Pipe® crossings. Loss Of fluid
circulation has not been encountered on any of the installations. Should it occur, however, Laney will create
a situation-specific response plan to address the issue. Depending on the formation encountered (possible
voids, karst, cavern, etc.), Laney may decide to retract the pipeline from the drilled path and propose a plan
to the Project Team for the direction forward.
HOLE COLLAPSE
Laney has nOt encountered a hole collapse on any Direct Pipe® project to date. The risk is significantly
reduced since the overcut is only about 2—inches larger than the product pipe diameter.
END OF SECTION
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