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Carbon Sequestration in Sedimentary Basins Module VII: Weyburn, Sask.

Carbon Sequestration in Sedimentary Basins Module VII: Weyburn, Sask. Maurice Dusseault Department of Earth Sciences University of Waterloo. Weyburn: CO 2 as EOR Agent.

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Carbon Sequestration in Sedimentary Basins Module VII: Weyburn, Sask.

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  1. Carbon Sequestrationin Sedimentary BasinsModule VII: Weyburn, Sask. Maurice Dusseault Department of Earth Sciences University of Waterloo

  2. Weyburn: CO2 as EOR Agent • The Weyburn project started in 2000 and is located in an oil reservoir discovered in 1954 in Weyburn, Southeastern Saskatchewan, Canada. The CO2 for this project is captured at the Great Plains Coal Gasification plant in Beulah, North Dakota which has produced methane from coal for more than 30 years. At Weyburn, the CO2 will also be used for enhanced oil recovery with an injection rate of about 2 million tonnes per year. (Quote) http://www.engineerlive.com/european-process-engineer/17576/carbon-dioxide-capture.thtml#

  3. Regina Weyburn Manitoba Estevan Saskatchewan Canada USA Montana North Dakota Bismarck Beulah Weyburn, CO2 Source, Pipeline • 250 MMCF/d CO2: - coal gasification • 95 MMCF/d contracted for Weyburn CO2 EOR project • 7000 t/d in 2006 • 320 km pipeline • CO2 purity 95% • CO2 @ 15 MPa • CO2 RF ~ 0.16 • Total RF ~42-43% 30-36 cm pipeline >50 BCF injected to date

  4. Weyburn Geological Disposition k ~ 10-15 mD Φ ~ 15-30% Dan Olsen, GEUS, 2007

  5. Weyburn Field History Dan Olsen, GEUS, 2007

  6. Injection Strategy at Weyburn Dan Olsen, Geus, 2007

  7. Time-Lapse Seismic Monitoring

  8. Time-Lapse Seismic • Take a survey at time t1 • Take another survey at time t2 • The difference in seismic velocities, reflection coefficients, and attenuation can be attributed to changes in CO2 distribution, thickness, SCO2… • This is a “snapshot” method used also in Sleipner, Permian Basin, etc. • Also, Δ(gravity, EM, resistivity, …)

  9. Simulation, Monitoring…

  10. CO2 Storage at Weyburn

  11. Modeling Weyburn (courtesy Sask. Industry & Resources).

  12. CO2 Compression and Transport • Compression requires energy… • Also, generated heat must be dissipated • Is there an optimum p, T for CO2 transport by pipeline? • Are there other options? • What about the steel in pipelines for higher p CO2 transport?

  13. Issues in CO2 Compression and Transport (Pipelines) • Compression requires energy • Heat of compression must be dissipated • Avoiding corrosion is necessary • Special grade of steel is required • Avoiding hydrate formation is necessary • H2O + CO2 form solids at certain p & T

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