apec workshop 2 presentation 10 apec workshop 2 eor & weyburn case study
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Neil WildgustEOR & WEYBURN CASE STUDY
Global CCS InstituteWORKSHOP FOR CIVIL, CHEMICAL, ELECTRICAL, ENVIRONMENTAL AND MECHANICAL ENGINEERS:
INTRODUCTION TO CAPTURE, USE AND GEOLOGICAL STORAGE OF CO2
October 13-14, 2014
DF CFE Technology Museum
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CO2-Enhanced Oil Recovery
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WMP has used these sites to study technical aspects of CO2
geological storage
Commercial EOR operations in Weyburn and Midale oilfields
utilise anthropogenic CO2
Over 25Mt of CO2 injected and stored since 2000
IEAGHG Weyburn-Midale CO2 Monitoring
& Storage Project (WMP) 2000 to 2012
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CO2 Source: Great Plains Synfuel Plant
• 250 mmscfd CO2 by-product of coal (lignite) gasification
• approx. 8000 tonnes/day suitable for EOR
• CO2 purity 95% (less than 2% H2S)
• 180 mi pipeline (14 in & 12 in) built & operated by Great Plains
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Oil Production: Weyburn Field
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Best Practices Manual
• Characterization• Performance Predictions• Geochemical Monitoring• Geophysical Monitoring• Performance Validation• Well Integrity• Risk Assessment• Community Outreach
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Site Characterization
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Monitoring Techniques – 4D Seismic
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Passive Seismic Monitoring• Documentation of time,
magnitude and location of seismicity:
• Public assurance
• Integrity of the sealing units
• Injection control
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False Claims of Weyburn CO2 Leakage • source of problems according to local consultant…
• ‘clearly anthropogenic CO2 injected into Weyburn reservoir’
- CO2 concentrations
- d13C isotopes
- Methane concentrations
- Ethane+ concentrations
- ‘oil’ sheen on dugout
- bubbles, foam, noises…
- dead animals
Pictures from Globe and Mail, Jan 12, 2011
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Soil Gas Composition
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Carbon 14 Isotope Data
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Wellbore Integrity
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