electromagnetic well logs simulated with comsol® … · artificial lift the digital oilfield:...
TRANSCRIPT
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ELECTROMAGNETIC WELL LOGS
SIMULATED WITH COMSOL® RF
MODULE ON A CLUSTERDeepa Swaminathan, Gerald Minerbo,
Kanai Pathak
Drilling & Production Group HFE-EMS,
Schlumberger
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Author’s Profile
October 15, 2014 2
GERALD MINERBO
Doctorate in Applied Mathematics and Theoretical Physics
Doctorate in Physics , Cambridge University , UK
25+ years in Schlumberger as Senior Research Scientist and
Advisor for HFE(since 2007)
KANAI PATHAK
Masters in Computer Science, University of New Mexico
24 years in Schlumberger, HPC Systems Architect, Cloud
Systems Program Manager
DEEPA SWAMINATHAN
Masters in Computational Science and Engineering, GATECH
3 years in Schlumberger, Software Engineer, Production Group
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Agenda
3
Project Overview and Background
Project Scope and Problem Definition
COMSOL model design
Solution and Results
Business Value and Benefits
Conclusion and Acknowledgements
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Project Overview and Background
October 15, 2014 4
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Schlumberger - Oilfield Operation
Defining: WesternGeco
Accessing:Drilling & Measurements
Evaluating: Wireline
Optimizing: Well Services
Producing:Well Completions & Production,Artificial Lift
The Digital Oilfield: Schlumberger Information Systems
Schlumberger Solutions: Integrated Project Management
Houston Formation Evaluation
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T2
T4
T1
T3
T5
R1
R2
T1
R1
R2
Electromagnetic Tool
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Project Scope and Problem Definition
October 15, 2014 7
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8
New Product Development Cycle
PROJECT
LAUNCH
VALIDATE REQ’S
AND CONCEPT
C/T=12 MTHS
EXPERIMENT
DESIGN
C/T=18 MTHS
BUILD
PROTOTYPE
C/T=12 MTHS
TEST
PROTOTYPE
C/T=6 MTHS
VERIFY
C/T=6 MTHS
Defect = 95%
75% Defects
Each iteration increases
lead time by 6-18 mths
Total time to Commercialize from Engineering to Manufacturing ~ 6 years
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Identifying bottlenecks in the model
9
DEFINE MEASURE ANALYZE IMPROVE CONTROL
Day 1 {5,5.5…8}
Day 2 {8.5,9…12}
Day 3 {12.5,13…15}
T2
T4
T1
T3
T5
R1
R2
PARAMETRIC SWEEP
distance -T3 and T5
range[5,15,0.5]
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Modeling in COMSOL®
Courtesy – Tina , Gerald, Gong Li and Keli
Sun
Senior Modeling Engineers and Research
Scientist , HFE , Schlumberger
10
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Fracture in layered formation: triaxial sensor
response
z
x
s=(1,1,1) S/m
Layer 3
1cm thick conductive layer
s=(10,10,5) S/m Layer 5
Magnetic dipole source
1cm thick resistive layer,
s=(0.001,0.001,0.001) S/m
1D 5 layer model contains one thin conductive and one resistive layer, with
an additional finite size resistive fracture (0.1x1x2)m
s=(1,1,1) S/m
s=(1,1,1) S/m
s=(0.001,0.001,
0.001) S/m
Tool configuration:
Triaxial transmitter T and receiver R1 and R2
T at (0,0,0), R1 at (0,0,37''), R2 at (0,0,43'')
Frequency: 100kHz, 2MHz
Well trajectory: 45 degree inclination straight line
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3D Triaxial Model in COMSOL 4.3a
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COMSOL modeling results compared with
ANISBEDS (2 MHz) for benchmark example
-4 -2 0 2 4-0.04
-0.03
-0.02
-0.01
0
measured depth [m]
rea
l(H
xx)
x transmitter, x receiver at 37"
ANISBEDS
COMSOL
-4 -2 0 2 4-0.02
-0.01
0
0.01
0.02
0.03
measured depth [m]
rea
l(H
xz)
x transmitter, z receiver at 37"
ANISBEDS
COMSOL
-4 -2 0 2 4-0.07
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
measured depth [m]
rea
l(H
yy)
y transmitter, y receiver at 37"
ANISBEDS
COMSOL
-4 -2 0 2 4-0.02
-0.01
0
0.01
0.02
0.03
measured depth [m]
rea
l(H
zx)
z transmitter, x receiver at 37"
ANISBEDS
COMSOL
-4 -2 0 2 4-0.04
-0.03
-0.02
-0.01
0
measured depth [m]
rea
l(H
zz)
z transmitter, z receiver at 37"
ANISBEDS
COMSOL
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Implement Comsol on Cluster 4.3b
October 15, 2014
14
DEFINE MEASURE ANALYZE IMPROVE CONTROL
Attended
WORKSHOP
Negotiated and Acquired
CLUSTER LICENSE
Deployed Comsol on cluster
CLUSTER
ADMIN
2XCPUs (Intel Sandybridge)[each 10 cores] so total 20 cores. 96GB RAM, 1.2TB local scratch space[hard drive], 1GbEthernet
connection/Infiniband
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Best Practice for running COMSOL
October 15, 2014 15
Wrapper script –GUI invokes the scheduler on cluster
DEFINE MEASURE ANALYZE IMPROVE CONTROL
RUN CLUSTER JOBS FROM GUI
? ?
USERS - PHYSICISTS
NO COMMAND PROMPTS NO USABILITY TRANSITION
RUN CLUSTER JOBS THROUGH SCRIPT
TEXT EDITOR
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Results - Benchmark Model
October 15, 2014 16
Model Size : 4,999,804 Degrees of Freedom
Memory : 33 GB/28GB
Solver : Linear
Parametric
Sweep : direction[1,2,3]
depth measured – 12 points
DEFINE MEASURE ANALYZE IMPROVE CONTROL
Triaxial induction EM tools
Simulation time – 12 hours
to 1.5 hours
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Deliverables
October 15, 2014 17
Report on models taken for performance run explaining
distributed parametric sweep and speed-up.
Guide on implementation of COMSOL on Cluster for Physicists
DEFINE MEASURE ANALYZE IMPROVE CONTROL
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Research and Challenges
October 15, 2014 18
Designing models to solve the physicists problems
Nested parametric sweep and cluster license errors
– 96% Progress on 1 node in 36 hours against 35% on 12 nodes
Distributed parametric Sweep setting to solvers than parameters
Memory usage in solver distribution – 12.25/25GB
Model developed in older version- results mismatch with latest
Improvements suggestion on submitting bugs
Deliver better software for
Schlumberger
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Acknowledgement
19
Tina Zhao and Gong Li Wang –Senior Modeling Engineer
Jamie Grant – Controller HFE
Linus Anders, David Kan – COMSOL Support
Jinlan Huang – COMSOL Conference Chair
Cheryll Manlapaz Vargas– LSS Site Champion, HFE
Fabien Houeto, Project Manager–Slb
Keli Sun – Modeling Engineer Schlumbeger
HFE
Global Métier
Managers
Denis Heliot
Jaideva Goswami
Chuk – TDAS TL
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Conclusion and Next Steps
October 15, 2014 20
Jaideva Goswami and Denis Heliot, HFE Global Métier Managers
- This is key to delivering a reliable product at lower cost in a timely
manner. Your work has demonstrated the feasibility of using HPC to enhance
our modeling capabilities. This is in line with our long-term objectives at
Research and EMS, and I look forward to its wider implementation.
PARAMET
ERSCOMPUTIN
G
PHYSICS PARAMETE
RS
COMPUTIN
GPHYSICS
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October 15, 2014 21
• Invest on technology
• Establish collaboration for computing power
• Utilize IT specialists
• Improve Quality
• Save time on faster simulations
• Faster Prototyping
• More time for Modeling
JAMES CLERK MAXWELL