Post on 15-Jan-2016
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Geological Sequestration of C
Carbon SequestrationCarbon Sequestrationin Sedimentary Basinsin Sedimentary Basins
Module VII: Weyburn, Module VII: Weyburn, Sask. Sask.
Maurice DusseaultDepartment of Earth Sciences
University of Waterloo
Geological Sequestration of C
Weyburn: COWeyburn: CO22 as EOR Agent 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#
Geological Sequestration of C
Weyburn, COWeyburn, CO22 Source, Source, Pipeline 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%
ReginaRegina
EstevanEstevan
BismarckBismarck
North DakotaNorth Dakota
MontanaMontana
ManitobaManitoba
SaskatchewanSaskatchewan CanadaCanada
USAUSA
WeyburnWeyburn
BeulahBeulah
>50 BCF injected to date
30-36 cm pipeline
Geological Sequestration of C
Weyburn Geological Weyburn Geological DispositionDisposition
k ~ 10-15 mDΦ ~ 15-30% Dan Olsen, GEUS, 2007
Geological Sequestration of C
Weyburn Field HistoryWeyburn Field History
Dan Olsen, GEUS, 2007
Geological Sequestration of C
Injection Strategy at Injection Strategy at WeyburnWeyburn
Dan Olsen, Geus, 2007
Geological Sequestration of C
Time-Lapse Seismic Time-Lapse Seismic MonitoringMonitoring
Geological Sequestration of C
Time-Lapse SeismicTime-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, …)
Geological Sequestration of C
Simulation, Monitoring…Simulation, Monitoring…
Geological Sequestration of C
COCO22 Storage at Weyburn Storage at Weyburn
Geological Sequestration of C
Modeling WeyburnModeling Weyburn
(courtesy Sask. Industry & Resources).
Geological Sequestration of C
COCO22 Compression and Compression and TransportTransport 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?
Geological Sequestration of C
Issues in COIssues in CO22 Compression Compression and Transport (Pipelines)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