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Center for Drilling and Wells for improved Recovery
(www.sbbu.no)
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Center for Drilling and Wells for improved Recovery (SBBU)
Vision
• The vision is to unlock petroleum resources through better drilling
and well technology.
Objective
• The objective is improved safety for people and the environment
and value creation through better resource development and
reduced cost.
Strategy
• Collaborative environment between the oil industry and the R&D
community.
• Continued process for development of the R&D program.
• Associated projects involving service companies and smaller
suppliers.
• National and international cooperation.
RESEARCH PARTNERS
INDUSTRIAL PARTNERS
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54 % of the resources remain in ground
1 % points increase in the recovery rate represents a
gross value of NOK 500 billions
A significant amount of investment is needed to capture
the remaining values
Reference: Bente Nyland, NPD
Presentation at DEMO2000. 22.10.2009
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Total investment level:
30 billion USD
Annual drilling and well
costs: 16 billion USD
Exploration cost:
5,3 billion USD
Well costs:
10,7 billion USD
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Centre for Drilling and Wells for improved Recovery
Trondheim and Stavanger join forces together
with the international oil and gas industry
SINTEF
Petroleum
NTNU
Petroleum
IRIS Petroleum
(Host)
 Total employees: 122
 Drilling and wells: 76
 Reservoir: 28
 Annual R&D: NOK 190 mill
 Total employees: 120
 Drilling and wells: 60
 Reservoir: 50
 Annual R&D: 160
 Science staff: 20 (permanent)
 Prof II (16)
 M.Sc. students: 100 annually
 Post doc & Ph.D students: 70
 Annual R&D: NOK 80 mill/y
 Science staff: 21 (permanent)
 Prof II (10)
 M.Sc. students: 95 annually
 Post doc & Ph.D students: 32
 Annual R&D: NOK 25 mill/y
UiS Petroleum
The research partners R&D within oil and gas NOK 450-500 mill/y
Science staff: 310
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The R&D Partners
IRIS
NTNU
SINTEF
UiS
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Full scale test facilities
ULLRIGG
• Ullrigg Drilling and Well Center,
Stavanger
– Full scale offshore type drilling rig
– 7 wells
– HPHT test cells
• Tiller, Trondheim
– Large scale flow laboratory
Collaborative
environment between
R&D and oil companies
Principles
• Fee 5 mill/year
• One joint board
• Common results
SBBU Joint R&D Program
SFI/NFR
IRIS/SINTEF/UiS/NTNU
Oil companies
SBBU
Joint research
program
Budget
NOK 35 – 50 million/year
 P1 Drilling processes
 P2 Drilling technology
 P3 Well technology
 SBBU Academy
All ongoing R&D at the SBBU
partners will be used as the
fundament
Drilling and Well
G&G
Reservoir
Safety
Current
R&D-projects
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SBBU Academy
•
PhD and MSc
– education with high industry relevance
NTNU
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Structured continued competence
development of personnel with the
industry
UiS
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Commercialization strategy
Commercialization
with external partners
outside the SBBU
governance
Collaborative
environment between
R&D and oil companies
Associated
Projects
Associated
Projects
NOK BB mill/y
SBBU
NOK XX mill/y
Joint research
program
Associated
Projects
NOK ZZ mill/y
Associated
Projects
NOK YY mill/y
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R&D Program
P1: Safe and efficient drilling process
P2: Drilling solutions for improved recovery
P3: Well solutions for improved recovery
•
•
•
Coordination of the Center’s activities in relation to the other R&D activities
at the R&D partners
Make use of the current R&D
Technology and solutions will be commercially available in the market in
cooperation with the industry
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Program 1: Safe and efficient drilling process
Objectives
 Improved drilling performance
 Collection of reliable and accurate drilling performance information
 Improved formation integrity
Projects
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P1.1: Data and information quality and reliability
P1.2: Testing and validation of drilling software
P1.3: ROP (Rate of Penetration) Management and Improvement
P1.4: Formation integrity
P1.5: MPD in depleted reservoirs and when drilling from floaters
P1.6: Determining changes in oil based mud during well control situations
P1.7: Potentials of Nanofluids for drilling
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Program 2: Drilling solutions for improved recovery
Objectives
 Optimal well placement and well design
 Utilize high capacity data transmission and real-time interpretation of drilling and
seismic data, in combination with work processes for updating of earth models
Projects
 P2.1: Deep imaging and geo-steering during drilling
 P2.2: Flexible earth model
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Program 3: Well solutions for improved recovery
Objectives
 Improved well solutions including
 Classical single bore wells
 Advanced well configurations, including slender wells, branched wells, micro-field
developments, and complex field development schemes
 Intelligent completions
 Improved well integrity
 Improved downhole water shut-off
 Improved plugging and abandonment
Projects
 P3.1: Slender well technology
 P3.2: Life cycle well integrity
 P3.3: Improved Plugging and Abandonment (P&A)
 P3.4: Water shut-off and intelligent well completions
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Project results
Examples
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P1.3 ROP Management and Improvement
Objectives
• Optimize WOB (Weight On Bit), RPM (Rotation Per Minute), and resulting
ROP (Rate of Penetration
• Improve drilling in hard rocks
Project tasks
• Hole cleaning focused ROP management
• Vibration focused ROP management
• Bit wear focused ROP management
• Screening of technologies which can improve drilling in hard rocks
P1.3 ROP Management and Improvement
Cuttings are generated and transported along the annulus:
Importance of drill-pipe eccentricity
Importance of drill-pipe rotational velocity
Difficult to assess cross sectional velocity field
For inclination above 35deg, cuttings beds can form
Longitudinal view
Cross-section
U
FΔp
FD
Fb
FL
Cuttings particle
Fg
vm
R
Mud velocity profile
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•
•
•
Cuttings particle
V
W
FL
Fb
Fg
vm
Tangential
component
of mud flow
α
Rotating
drill-pipe
Cuttings bed
Courtesy Sayed-Ahmed & Sharaf-El-Din, 2006)
Results for Power-law (n= 0.5), laminar, concentric
P1.3 ROP Management and Improvement
Downhole properties of the drilling fluid are:
1. Function of depth (effect of temperature, pressure,
weighting material and cuttings concentration)
2. Function of time (in constant evolution)
Shear-stress from 3 to 6 rpm
Shear-stress from 6 to 30 rpm
Shear-stress from 30 to 60 rpm
Shear-stress from 60 to 100 rpm
Shear-stress from 100 to 200 rpm
Shear-stress from 200 to 300 rpm
Shear-stress from 300 to 600 rpm
Inside the drill-string
In the annulus
Geo-thermal gradient
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Animation accelerated 120 times
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P2.1 Deep imaging and geo-steering
Project objectives
The objective is to develop methods and algorithms for
• deep imaging (imaging around and ahead of well) and
• geo-steering
in order to
• optimize well placement and
• improve the amount and quality of geological and reservoir data
acquired during drilling
P2.1 Deep imaging and geo-steering
Sources at the surface, receivers at the borehole
F=35 Hz
F=40 Hz
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P2.1 Deep imaging and geo-steering
Sources at the surface, receivers at the borehole
- velocity log comparison
True model
Initial model
Inverted model
True model
Initial model
Inverted model
True model
Initial model
Inverted model
X=1 Km
X=2 Km
X=3 Km
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P2.1 Deep imaging and geo-steering
Well placement in thin reservoirs
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P2.2 Flexible earth model
• Tool: a new, gridless mathematical basis
• Effective earth model management
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Local updates
Geological abstract core
• Geological rules and parameters allows
geological knowledge to be built directly
into the model
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Improved uncertainty management
Multi-scale management
Complex geological structures
High degree of automation
• Applications
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An always up-to-date earth model to
support optimal well placement during
drilling
Drilling in reservoirs with complex
geological structure
Main principles for gridless approach:
• Separation of structure and properties
• Individual management of each
geological region and each property
T1
T2
Existing
properties are
linked with
current structure
when required
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P3.1 Slender well technology
Subsea case:
P3.1 Slender well technology
Typical Well Cost Distribution
Rig cost (50%)
30% red.
15% red. in
total well cost
Materials, casing (25%)
30% red.
7,5 % red. in
total well cost
Service, supply, tools,
planning (25%)
30% red.
7,5% red. in
total well cost
The main contribution to reduced well costs is reduced
rig cost
Rig cost = Rig day rate x no. of days
P3.2 Life cycle well integrity
Barrier elements in production wells
Primary well barrier elements
 Production packer
 Completion string (tubing between SCSSV and
production packer)
 SCSSV (Surface Controlled Subsurface Safety Valve)
Secondary well barrier elements
 Casing cement
 Casing
 Wellhead (casing hanger, tubing head with connectors)
 Tubing hanger
 Tubing hanger plug
 Production tree (annulus and production line master
valves)
NORSOK D-10 (2004)
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P3.2 Life cycle well integrity
The FIB-SEM technique
Characterisation of cement
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P3.3 Improved Plugging & Abandonment (P&A)
Project objective
• The goal is to make P&A operations more cost-effective while maintaining or
improving well integrity.
Scope of work
• Focus on both existing wells and future wells
• Concept evaluation and risk assessment of plugging solutions
• Evolving technologies
• Plugging materials
• Improving well design
P3.4 Production Optimization through the use of Water Shut-offs and
Intelligent Well Completions
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Collapsed gel structures, mostly outspread as coatings on the pore walls
Elemental composition as identified with SEM reflects chemical structure of polymer
Si (quartz)
C
O
N
Na
Pd (sample preparation)
P3.4 Production Optimization through the use of Water Shut-offs and
Intelligent Well Completions
Time : start (0 years)
Porosity of layer 15:
Gaussian field
Time: end (10 years)
P3.4 Production Optimization through the use of Water Shut-offs and
Intelligent Well Completions
Water & Gas Shut-off Technologies
Autonomous Inflow Control Devices (AICD's)
Picture: Inflow Control
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Thank you for your attention