脱气对致密油藏流体渗流规律影响研究进展

doi:10.3981/j.issn.1000-7857.2022.08.010

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Abstract: Most of the tight oil reservoirs contain dissolved gas. When the production pressure is lower than the bubble point pressure, the dissolved gas is precipitated, increasing the seepage resistance and affecting the productivity. Based on the porethroat structure characteristics of the tight reservoirs, this paper explores the internal causes of the fluid seepage characteristics of the gas-bearing tight reservoirs, analyzes the fluid flow characteristics and the influencing factors after degassing of the reservoir, and compares the performances of the tight oil reservoirs and the conventional oil reservoirs, focusing on the differences of the fluid seepage characteristics after degassing. The existing research methods are reviewed, as well as the research status of the related mathematical models. Finally, the research trend of the fluid seepage law in the gas-bearing tight reservoirs is prospected.

Key words： tight oil degassing law of porous flow

Received: 15 October 2021

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	Articles by authors
	RAO Yuan
	YANG Zhengming
	ZHANG Yapu
	WU Zhenkai
	LIU Chang

Cite this article:

RAO Yuan,YANG Zhengming,ZHANG Yapu, et al. The effects of degassing on fluid seepage law in tight oil reservoirs[J]. Science & Technology Review, 2022, 40(8): 104-114.

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http://www.kjdb.org/EN/10.3981/j.issn.1000-7857.2022.08.010 OR http://www.kjdb.org/EN/Y2022/V40/I8/104

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