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

SUPPORTED BY:

CO2-Enhanced Oil Recovery

SUPPORTED BY:

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

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

Oil Production: Weyburn Field

SUPPORTED BY:

Best Practices Manual

• Characterization• Performance Predictions• Geochemical Monitoring• Geophysical Monitoring• Performance Validation• Well Integrity• Risk Assessment• Community Outreach

SUPPORTED BY:

Site Characterization

SUPPORTED BY:

Monitoring Techniques – 4D Seismic

SUPPORTED BY:

Passive Seismic Monitoring• Documentation of time,

magnitude and location of seismicity:

• Public assurance

• Integrity of the sealing units

• Injection control

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

Soil Gas Composition

SUPPORTED BY:

Carbon 14 Isotope Data

SUPPORTED BY:

Wellbore Integrity

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