international conference on ccs: session 4.1 - mr. zewei yu
TRANSCRIPT
The Story of Weyburn:
The Weyburn-Midale Project
Presented by
Zewei Yu, SaskPower
on behalf of
Dr. Malcolm Wilson
Petroleum Technology Research Centre (PTRC)
and
Dr. Frank Mourits
Natural Resources Canada (NRCan)
28 July 2011
International Carbon Capture and Storage Conference
Beijing, People’s Republic of China
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About the Weyburn-Midale Project
A collaboration of two separate projects:
The IEAGHG Weyburn-Midale CO2 Monitoring and
Storage Project – the world’s largest, in-the-field
research project examining the long-term storage of
CO2 in a depleting oil field
The research project is located on the site of the
commercial enhanced oil recovery (EOR) operations
of Cenovus at Weyburn and Apache at Midale –
together the largest CO2 injection project in the world
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ALBERTA
MANITOBA
MONTANA
WYOMINGSOUTH DAKOTA
NORTH DAKOTA
EDMONTON
SASKATOON
WINNIPEG
REGINA
HELENA
BISMARCK
PIERRE
CALGARY
WILLISTON BASIN
HUDSONBAY
SASKATCHEWAN
WEYBURN
ALBERTA
MANITOBA
MONTANA
WYOMINGSOUTH DAKOTA
NORTH DAKOTA
EDMONTON
SASKATOON
WINNIPEG
REGINA
HELENA
BISMARCK
PIERRE
CALGARY
WILLISTON BASIN
HUDSONBAY
SASKATCHEWAN
WEYBURN
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Cenovus Weyburn Unit Production
Weyburn Unit Oil Production
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
50,000
Jan-
55
Jan-
60
Jan-
65
Jan-
70
Jan-
75
Jan-
80
Jan-
85
Jan-
90
Jan-
95
Jan-
00
Jan-
05
Jan-
10
BO
PD
(g
ross)
Primary & Waterflood
Pre CO2
Hz Infills
Vertical Infills
CO2
EOR
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Weyburn and Midale Key CO2-EOR Operating Statistics
Weyburn (Cenovus)(July 2011)
Midale (Apache)(April 2011)
Start of CO2 injection / duration 2000 / 30 years 2005 / 30 years
Wellhead Injection pressure 10 - 11 MPa (1450 - 1600 psi)
Daily injection rate of fresh CO2
Recycle rate of CO2 & produced gas
Total daily CO2 injection rate
6,500 t/d (125 MMscf/d)
6,500 t/d (125 MMscf/d)
13,000 t/d (250 MMscf/d)
1,250 t/d (25 MMscf/d)
630 t/d (13 MMscf/d)
1,880 t/d (38 MMscf/d)
Annual amount of fresh CO2
injected
2.4 million tonnes 0.46 million tonnes
Total amount of fresh CO2 injected
to date
17.5 million tonnes 2.5 million tonnes
Incremental / total oil production 18,000 / 28,000 b/d 2,540 / 5,600 b/d
Projected total incremental oil
recovery due to CO2
155 million barrels 60 million barrels
(17% OOIP)
Lifecycle CO2 utilization factor 3 - 4 Mcf/b 2.3 Mcf/b
Projected amount of CO2 stored at
project completion
30+ million tonnes* (gross)
26+ million tonnes (net)
10+ million tonnes* (gross)
8.5+ million tonnes (net)
Total capital cost of EOR project Estimated CAD$1.3 billion Estimated CAD$400 million
* equivalent to removing 9 million cars from the road for one year
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0
10
20
30
40
50
60
2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 2055
CO
2S
tora
ge
(m
illio
n to
nn
es
)
Phase 1 IEA Projection
Latest Estimate
EOR OperationsInitial estimate: 23.2 Mt
EOR OperationsLatest Estimate > 30 Mt
Potential Post-EOR Storage Operations
(25 Mt)
~17.5 Million Tonnes Stored
to Date
Total CO2 Storage (Phase 1 estimate) ~55 Mt
Weyburn CO2 Storage Capacity
Historical and Projected
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CO2 Source: Great Plains Synfuel Plant
二氧化碳来源:大平原合成材料厂
Produces 13,000 tonnes/day (250 mmcf/d)
of CO2 as by-product of lignite gasification
- 8,000 t/d available for EOR
CO2 purity is 95% (less than 2% H2S)
- trace of mercaptans
DGC delivers CO2 to Weyburn-Midale
fields through 320-km pipeline (14 and 12
inch)
CO2 delivered in supercritical state at 2175
psi (15 MPa)
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IEAGHG Weyburn - Midale CO2 Monitoring and Storage Project
IEAGHG Weyburn - Midale 二氧化碳监控及储存项
Use site to examine long-term storage of CO2 in a depleting oil field
Develop & demonstrate technologies for the design, implementations, monitoring
and verification of CO2 geological storage
Deliver framework necessary to encourage and accelerate CO2 geological storage on a worldwide basis (Best Practices Manual)
Project Objectives
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Weyburn - Midale Final Phase Objectives
Weyburn - Midale 项目后期的主要目标
Technical Components
• Site Characterization
• Monitoring and Verification
• Wellbore Integrity
• Risk Management
Policy Components
• Regulatory Issues
• Public Communications and Outreach
Best Practices Manual
Transition of CO2-EOR
Operations to CO2-storage
Pre-injection, Operations,
Post-injection, Closure
Final Phase - Project Structure
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Final Phase: Partners
Over 25 Canadian, U.S. and European Research Organizations & Research Performers
6 Government Sponsors
• Natural Resources Canada
• United States Dept. of Energy
• IEA GHG R&D Programme
• Saskatchewan Energy and Resources
• Alberta Innovation and Science
• RITE (Research Institute of Innovative
Technology for the Earth)
• Alberta Innovates – Technology Solutions
• Canadian Light Source – Synchrotron
• ECOMatters (ECOM)
• Geological Survey of Canada
• Harm Maathuis Hydrogeology
• Permedia Group
• Saskatchewan Research Council
• Canada Capital Energy Corp
• Bluewave Resources
• Fugro Seismic Imaging
• Lawrence Livermore National Laboratories
• Opsens Engineering
• Ohio University
• Schlumberger
• U California Irvine
• University of Bristol, UK
• British Geological Survey
• International Energy Agency
(IEA) GHG R&D Programme
10 Industry Sponsors
• Nexen
• OMV Austria
• SaskPower.
• Schlumberger
• Shell
• Apache Canada
• Aramco Services Co
• Cenovus Energy
• Chevron
• Dakota Gasification
• T.L. Watson & Associates
• University of Saskatchewan
• University of Alberta
• University of Calgary
• Carleton University
• URS Canada Inc.
• Saskatchewan Geological
Survey
2007 - 2011
$41 Million(cash + in-kind)
Technical Manager
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Monitoring Techniques 监控技术4D Seismic 四维地震资料
Reprocessing
Discriminate pressure vs. saturation
Modelling & Inversion
Improve mapping of saturation/pore
pressure changes
Obtain detailed Rock Properties Data
Weyburn Specific Rock Physics
model
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Geochemical Monitoring Program
Fluid Geochemistry monitoring
• 16+ sampling trips; 40 to 60 wells; >40 parameters; >30,000 data
Soil gas monitoring
• Baseline and follow up surveys
Shallow HydrogeologicalMonitoring
• 11 surveys over 9 years
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Geochemical Modeling Program
Integration of Geochemical monitoring & Reservoir history matching
Reactive Transport modeling (with hydrocarbon EOS)
Experimental & modeling of CO2 -brine-rock interaction
Pore scale mineral alteration
2-phase fracture flow
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Well Integrity Program
Logging
Cement samples
Pressure Transient Tests
Mini-fracturing
Fluid sampling
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Conclusions
The geologic setting at Weyburn-Midale appears to be highly
suitable for long-term CO2 geological storage
4D-seismic monitoring proved effective to track CO2
movements, as did geochemical monitoring
Modeling indicates that:
98% of the injected CO2 will remain stored over thousands of
years
there will be no leakage through overlying formations into
biosphere or atmosphere
Project produced the most complete and comprehensive, peer-
reviewed data set on CO2 geological storage in the world
Best Practices Manual due in September 2011
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Thank You!