POSC / WITSML
Mudlog SIG - April 27, 28 2004
Project Review
Presented by
Cary Fico (ExxonMobil)
Participants:
John Lottinville (BHI)
Jim Theriot (POSC)
POSC Presentation Mudlog SIG Apr 2004.ppt
Agenda:
• Project Status & Examples
• Next Steps
• Project Resources
1
Complexity of Mudlog Data Content from Different Sources / Operations
Gas & Hydrocarbon Data
• hydrocarbon shows; staining, fluorescence, cut
• total gas, gas chromatograph analysis (component concentrations), gas ratios
• H2S & CO2
Cuttings & Lithologic Data
• lith description rock type, color, texture etc., visual porosity
• interpreted log and lithology percentage log
Mud Data
• composition, volume,
• temp, resistivity, mud wt (in/out)
Drilling & Operation Data
• hole depth, ROP
• bit info: bit trips, type, no.,WOB, RPM
• drilling parameter changes, drilling rate exponent
• pump pressure, mud rate, mud pump stroke counts
• coring points, DST, LOT
• MWD / LWD
2
Mudlog Data Definitions
(Partial List)
Approximately 175 types of information
Standard and Alternate Curve and Symbol Styles
Curve Name
Description
ROP
Rate of penetration
Typical Units
Imperial
Metric
ft/hr, min/ft
m/hr, min/m
RPM (Surface)
Torque (Surface)
WOB
THA (Total Gas)
Rotary speed
Rotary torque
Weight on bit
Hydrocarbon Analysis
Chromatograph, C2
rpm
kftlbs
klb
units, %
ppm
C2
rpm
tonnes
%
ppm
Casing Point
Text at side of or below symbol.
May include casing depth, size
and LOT information
Midnight Depth
Comment signifying depth at
00:00 hrs. Date is usual text.
Bit Change
Depth
Text gives bitname and
manufacturer. May have other bit
parameters typical for bit run.
Typical Examples of Type
9-5/8" csg
3022mMD
LOT 1.58 g/cc EMW
12/7/02
NB7 HTC MC75DGH
In 3033 m: Out 3933 m
900m in 90 hrs
Pressure
Description
Gasratio
Element
Mudlog
Associated Annotation & Symbols
1
1
1
1
1
1
1
1
1
3
POSC / WITSML Meeting: Sep 18, 19 2003
POSC / WITSML Meeting: Mudlog Initiative Agreed upon as high
priority.
Interested Parties:
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Shell [Linda Dodge]
BP [Matthew Kirkman]
Statoil [Oivind Berrgraf]
ExxonMobil (Cary Fico)
Paradigm [John Turvill]
Datalog [David Tonner]
Baker Hughes Inteq [John Lottinville, John Shields]
Halliburton Sperry Sun [Robert Schave]
Petrolink [Nick Williams]
SDC Geologix [Samit Sengupta]
POSC (Alna Doniger, Jim Theriot)
Landmark (Marcus Ridgway)
4
Mudlog Worksessions: Dec 2003 - Apr 2004
Core Work Team
• POSC (Jim Theriot)
• Baker Hughes Inteq [John Lottinville]
• ExxonMobil (Cary Fico)
Early Discussions
• SDC Geologix [Samit Sengupta]
• Datalog [David Tonner]
• ??
 Mudlog Data Definitions
 Map to WITSML Elements
• Propose New Elements
• ‘Cold Eyes’ Review of Data & Elements
• Review of Other Implementations
• Data Flow / Process Data Exchange
• Data ‘Packaging’
5
Annotation Style of Information
Mudlog Data Elements
Casing Point
Midnight Depth
Bit Change
Bit Parameters
Short Trip
Gen Engr Comment
Core Interval
Sidewall Core
Gas Peaks
Show Report
Circulation System Comments
Steam Sill Results
Gen Chromatograph Comment
Lithlog Log Comment
General Mudlog Comment
Directional Survey Comment
MudCheck Paramertes
Wireling Log Run
Etc...
WITSML Element - New - Mudlog Annotation
<?xml version="1.0" encoding="UTF-8" ?>
- <w:mudLogs xmlns:w="http://www.witsml.org/schemas/130">
- <w:mudLog>
- <w:annotation>
<w:annotationType>Midnight_Depth</w:annotationType>
<w:mdDepth uom="ft">11695</w:mdDepth>
<w:text>12/7/02</w:text>
</w:annotation>
- <w:annotation>
<w:annotationType>Core_Interval</w:annotationType>
<w:mdTop uom="ft">9000</w:mdTop>
<w:mdBottom uom="ft">9090</w:mdBottom>
<w:text>Core #3. Core 81/2 “ from 9000 MD to 9090 MD,
recovered 98%</w:text>
</w:annotation>
• annotation type
• mdTop - uom & depth; mdBottom - uom & depth
• or mdDepth - uom & depth
• text
6
Curve Style Information
Mudlog Curve Data
WITSML Elements - logHeader, logCurveInfo,
logData
Curve Data
Drilling Ops
• ROP
• RPM
• Torque
• WOB
• Hookload
• SPM
• Pump Pressure
• Dxc
Gas
• Total Gas
• Reference Gas
• C1, C2, C3 ...
Etc.
• log.xsd
• logHeader
• logCurveInfo
• mnemonic - use spreadsheet ‘curve mnemonic’
• units
• mnemonic index
• nullValue
• classPOSC - Property Type Name (PWLS classification)
• mnemAlias - not needed
• curveDescription - use spreadsheet ‘Description’
• logData
7
 Mudlog Data Definitions
 Map to WITSML Elements
• Propose New Elements
• ‘Cold Eyes’ Review of Data
& Elements
• Review of Other
Implementations
• Data Flow / Process Data
Exchange
• Data ‘Packaging’
Examples:
• Annotation
• Lithology
• Annotation
• Interpreted Interval
• Mixed Interval
• Directional Survey
• Annotation
• Survey Object
• Log / Curve Objects
• Lithology Qualifier
• Hydrocarbon Show
• Discrete Value Data
8
Business View: Complexity of Capturing and Distributing Mudlog
Data
Time
Depth
Edited
Reports (DOC, XLS)
Log Image (PDF, TIFF)
Data File (ASCII, LAS)
Data
disk
WSG Lithology &
Show Descriptions
from SWC and cores
Screens
Raw
Data
Engineer
Comments &
Observations
Reports (DOC, XLS)
Log Image (PDF, PDS,
Data
disk
TIFF)
Data File (ASCII, LAS)
Tools
Raw
Data
Multiplex
Engineer
Comments &
Observations
Wireline
Database
Edited
Log Image (PDF, PDS)
HTTP
Partners/
Gov
Multiplex
LWD/MWD
Database
Ext Links
On-line plots
Memory
Data
Tools
Log Image (PDF)
Data
disk
Data File (DLIS, LAS)
Screens
On-line plots
Rig Server
9
HTTP
QA/QC
Reports (DOC, XLS)
HTTP
(Changes with time, technology
and organizational roles)
Wellsite
Geologist
Archive
WSG
Comments &
Observations
HTTP
Flow Model
E-Mail,
Network
Generalized Data
Samples/
Cores
transported
from
wellsite
Data
disk
Bus. Unit
Mudlogger’s
Database
Log Image (PDF, PDS)
Ops
Geol /FE
Multiplex
Engineer
Comments &
Observations
Reports (DOC, XLS)
HTTP
Contractor
Analysis
On-line plots
Drilling
Screens
Sensors
Raw
Data
Rig
Server
HTTP
Rig Server
Mudloggers or WSG
Cuttings lithology & show
descriptions, calcimetry ,
shale density
Mudlog Format / Media Standards
Data Transfer, Usage and Display
Data Type
Recommended Format
Curves & Associated Data
LAS 3 (LAS 2+, XML)
Log Image
.PDF (.PDS, .TIFF)
Log Drawing File (Geo)
.ODF
Files / Reports Etc.
.xls, .doc, .mdb
?
Needs to be
worked with
data
providers,
database &
apps vendors
?
Physical Media
10
Next Steps & Project Resource Review
ExxonMobil, BHI, POSC, Datalog, Geologix, Landmark, ??
• ‘Cold Eyes’ Review Mudlog Data Content, Mapping to WITSML Elements
• Propose Mudlog data process as seen in ‘Business View’ - how data is
generated, captured, distributed, used
• Data ‘Packaging’ (Multiple Objects / Multiple Data Streams)
• Use of WITSML Server - Publish, Subscribe ...
• Service Provider and Application Vendor Specifications
• Tentative Pilot Project 4th Qtr: pending scope and commitment
• Organizational Acceptance & Use
Future Potential (2005 - 2006 ?)
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Core Analysis / Reports WITSML Object
Fluid Reports WITSML Object
Formation Evaluation / Log WITSML Object
Operations Report / Daily Drilling WITSML Object
Real Time Data WITSML Data Object
11
Thank - You
12
Benefits
Why Standardized Formats ? (Data Content)
• Ensure complete data set; with at least minimal data + information
• Expedite data receipt & loading, data search & tracking
• Expedite transfer and integration of data for Engineers & Geoscientists
• Simplify the Complexity - WITSML benefits achieved through data schema standards
applied across different processes (as provided by service providers and internal
departments) that generate or modify data; eliminate need for point to point specifications
for data exchange
Business Benefits
• Reduce administration costs
• Reduce loss of data & cost associated with re-order, time searching or re-creating data
• Reduces time & costs associated with data loading into repositories and applications
• Improves data quality by ensuring data is complete and fit for business use.
• Improved decision making i.e more comprehensive information readily available when
needed in a useable format.
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