TGS Enlightening the Reservoir® 26 November 2013
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Roadmap
Fiber-optic sensing: PRM and DAS Why reservoir monitoring is important Fiber-optic sensors: the right choice for monitoring
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Fiber-optic PRM Sensors
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PRM and DAS are Different Techniques
Property
PRM
DAS
Areal monitoring
Well bore monitoring
Surface
Downhole
Discrete sensor housings
Continuous fiber length
Multi-component
Yes
No (?)
Noise Floor
Low
High
Linear Sampling
Low
High
Areal Sampling
Dense
Sparse
Dedicated
Shared / Pre-existing
Primary O&G Application Environment Layout
Fibers
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Why is Areal Monitoring Important?
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Reservoir model The road to recovery of more oil Current situation No Areal Well centric
Monitoring
Plausible but wrong
Investment carries unnecessary risk
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The road to recovery is not straight!
With Areal Monitoring
Models are Field centric Constrained
Investment assured Company Confidential
“The main benefit of 4D seismic data integration is to constrain reservoir modelling using complementary data” True model
Reservoir models matching to production data
Reservoir models matching to traditional PRM data 4D seismic data
First Break, Volume 30, July 2012 Article: 4D Seismic History Matching Using Information from the Flooded Zone Company Confidential Long Jin, Daniel Weber, Paul van den Hoek, Faruk Omer Alpak and Carlos Pirmez – Shell 11
Through-life Value
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Lifecycle Benefits are Significant
Production
Optimization Potential
Base
Infill
EOR Reduced Cost of $/bbl
Reduced Uncertainty
Time
Protection of sanctioned reserves
Cost-effective access
Recovery of most challenging resources
Source: O I Barkved, BP - EAGE Education Tour Series 2012 EET6: Seismic Surveillance for Reservoir Delivery Company Confidential
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How Areal Monitoring Generates Value Reservoir Management
New Wells Delivery
Base Management
Emerging Technology
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Fiber Sensors The Best Choice for Areal Monitoring
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Fiber-optic: The Best Choice for Monitoring Repeatable
Reliable
Scalable
Cost-effective
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Repeatable
Permanently installed sensors
Receiver and environmental non-repeatability are major sources of 4D noise
Repeatable sensor responses
Very simple mechanical design Stable material selection Robust qualification process
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Reliable
Fiber is resilient to water ingress No subsea power or electronics Data path redundancy Design life 25 years Warranty Ultra low fiber counts Unique planning and risk evaluation and mitigation process
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Scalable
Simple, flexible architecture Low fiber counts Modular topside Expandable subsea
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Cost-effective
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Cost-effective
400
Day Rates (kUSD)
350
300
250
60% 12 Streamers
200
150
ABG Sundal Collier – September 2013
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Cost-effective
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Fiber-optic: The Best Choice for Monitoring Repeatable
Reliable
Scalable
Cost-effective
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Fiber-optics Emerging? On the contrary fiber-optic sensing is rather mature Components extensively used for 30+ years in telecoms industry Sensors used since mid 1980s in military applications
Innovative? Actually, the sensors themselves are widespread Used in oil and gas, military, automotives, metals, aeronautics, civil engineering, food and packaging industries, medical applications … Innovation is now as much in application as it is in sensors
Important? Early adopters have seen significant benefits Most cost effective way of assuring investment performance Company Confidential
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Thank you Rob Ross +44 772 526 437
[email protected]
Any reproduction of part or all of the information contained in this PowerPoint presentation, without the prior written consent of TGS-NOPEC Geophysical Company, is prohibited. Company Confidential
© 2013 TGS-NOPEC Geophysical Company ASA. All rights reserved.
TGS Reservoir Solutions TGS provides global solutions that assure reservoir production and the highest payback for Increased Oil Recovery (IOR) schemes through:
Assuring the highest payback, lowest risk Increased Oil Recovery (IOR) schemes
High quality 4C/4D data and imaging for reservoir management
Stingray® optical Permanent Reservoir Monitoring (PRM) systems
Designed for effective delivery and operational excellence
Qualified for implementation in all field scenarios
A unique suite of risk management tools to drive lowest lifecycle cost
Reduced lifting costs and optimal recovery over >25 year life of a field Company Confidential
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