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An integrated flow-geomechanical analysis of flue gas injection in cranfield
- Title
- An integrated flow-geomechanical analysis of flue gas injection in cranfield
- Authors
- Lu X.; Lotfollahi M.; Ganis B.; Min B.; Wheeler M.F.
- Ewha Authors
- 민배현
- SCOPUS Author ID
- 민배현
- Issue Date
- 2018
- Journal Title
- Proceedings - SPE Symposium on Improved Oil Recovery
- Citation
- Proceedings - SPE Symposium on Improved Oil Recovery vol. 2018-April
- Publisher
- Society of Petroleum Engineers (SPE)
- Indexed
- SCOPUS
- Document Type
- Conference Paper
- Abstract
- CO2 capture and sequestration in subsurface reserves are expensive processes. Therefore flue gas can be directly injected into the oil and gas reservoirs to eliminate the cost of CO2 separation from power plant emissions and simultaneously enhance hydrocarbon production that may offset the cost of gas compression. However, gas injection in subsurface resources is often subject to poor volumetric sweep efficiency caused by low viscosity and low density of the injection fluid and formation heterogeneity. This paper aims to study gas mobility control techniques of water alternating gas (WAG) and foam in Cranfield via field-scale simulations. A coupled compositional flow and geomechanics simulator, IPARS, is used to accurately simulate the underlying physical processes. A hysteretic relative permeability model enables modeling local capillary trapping. Foam mobility control technique is examined to investigate the eminent level of CO2 capillary trapping by an implicit texture foam model. The coupled flow-geomechanics model can detect the effect of the plausible interaction of geomechanics and fluid flow on CO2 plume extension by analyzing the critical pressure that could induce hydraulic fracturing. Field-scale simulations indicate that during WAG and foam processes, the oil recovery increased 1.35 times and 1.6 times; and CO2 storage increased by 13.6% and 38.7% of total gas injection during the injection period compared to continuous gas flooding, respectively. During SAG process, coupling geomechanics will significantly increase the predicted gas storage volume, as a result of reservoir pore volume increase. Furthermore, analysis of the pressure margin for inducing hydraulic fracturing ensured the safety of SAG operation. © 2018, Society of Petroleum Engineers.
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- 일반대학원 > 대기과학공학과 > Journal papers
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