Injection Mode of CO2 Displacement in Heavy Oil Reservoirs

Zhao Min Li; Chao Zhang; Song Yan Li; Dong Zhang; Shu Hua Wang

doi:10.4028/www.scientific.net/AMR.402.680

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 402Injection Mode of CO2 Displacement in Heavy Oil...

Injection Mode of CO₂ Displacement in Heavy Oil Reservoirs

Abstract:

CO₂ injection has been an important enhanced oil recovery method adopted at the later stage of oilfield development, and a series of studies and field experiments has been done in recent years. However, there are some problems in this process, such as viscous fingering, gravity override, channeling of CO₂ in heterogeneous reservoir. These challenging issues are closely related to the CO₂ injection ways. At present, it is at development stage and calls for more research on optimally choosing CO₂ injection methods to displace oil. This research mainly uses different CO₂ injection methods to displace oil, in order to optimally choose the CO₂ injection method that fit this experiment area, and does research on the effects and principles of CO₂ drive to enhance oil recovery. Compared with gas flooding and WAG, CO₂ foam greatly reduce the mobility of the injected gas and expand the sweep volume. This is consistently observed in the numerically simulated foam process at the field level.

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Periodical:

Advanced Materials Research (Volume 402)

Pages:

680-686

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.402.680

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Online since:

November 2011

Authors:

Zhao Min Li, Chao Zhang, Song Yan Li, Dong Zhang, Shu Hua Wang

Keywords:

CO₂ Foam, Gas Flooding, Oil Recovery, Sweep Volume, Water Ratio, Water-Gas Alternation

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