The Open Petroleum Engineering Journal


ISSN: 1874-8341 ― Volume 12, 2019

The Research of Capillary Pressure in the Process of CO2 Displacement in Low-Permeability Reservoir

The Open Petroleum Engineering Journal , 2015, 8: 248-252

Li Jiqiang, Huang Xiaoliang, Niu Xiaofeng, Yuan Yingzhong, Yan Wende

School of Oil and Gas Engineering, Chongqing University of Science & Technology, Chongqing, 401331, P.R. China.

Electronic publication date 31/7/2015
[DOI: 10.2174/1874834101508010248]

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The function of capillary pressure in the process of CO2 displacement in low-permeability reservoir is researched through combination of indoor experiments and numerical simulation. On the basis of different displacement experiments in long core chamber, one-dimensional numerical simulation component model is built to research the function of capillary pressure under the different CO2 displacement ways. The results show that the capillary pressure under the different CO2 displacement ways is not consistent. Capillary pressure is the driving force in the process of CO2 displacement while resistance force in the process of CO2 pressure buildup and displacement. In order to promote reasonable and efficient development of low-permeability reservoirs, it is suggested that further study about microscopic effects and laws of the capillary pressure in the reservoir should be done through experiment.

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