The Research of Capillary Pressure in the Process of CO Displacement in Low-Permeability Reservoir
Li Jiqiang*, Huang Xiaoliang, Niu Xiaofeng, Yuan Yingzhong, Yan Wende
Identifiers and Pagination:Year: 2015
First Page: 248
Last Page: 252
Publisher Id: TOPEJ-8-248
Article History:Received Date: 17/4/2015
Revision Received Date: 21/5/2015
Acceptance Date: 26/5/2015
Electronic publication date: 31/7/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The function of capillary pressure in the process of CO 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 CO displacement ways. The results show that the capillary pressure under the different CO displacement ways is not consistent. Capillary pressure is the driving force in the process of CO displacement while resistance force in the process of CO 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.