不同渗透性储层Biot系数测试方法研究及其影响因素分析

doi:10.13722/j.cnki.jrme.2014.1212

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Abstract How to reasonably determine the Biot coefficient of reservoir is rather essential for wellbore stability analysis. This study tests the Biot coefficient of natural cores with different permeability through respectively Cross-plotting method，drainaging experimentation and sonic dynamic method. The results show that it is for cores with middle and high permeability(is Biot coefficient by Cross-plotting experiment，is Biot coefficient by drainage experiment， is Biot coefficient by sonic dynamic experiment)，while due to poor flowing capacity low permeability cores cannot get the Biot coefficient by the drainaging experimentation；taking the result of Cross-plotting method as the example，Biot coefficient for cores with high permeability distributes in the range of 0.90 to 1.00，that for cores with middle permeability is between 0.90 to 0.80，and that for low permeability is from 0.60 to 0.75；besides，it is recommended that under the allowed experimental conditions cores with middle or high permeability such as sandstones can obtain Biot coefficient by the drainaging method，while cores with low permeability such as shale，tight gas rocks should test Biot coefficient by the Cross-plotting method；finally，it discusses the factors from internal and external aspects on Biot coefficient. The research results will provide a good theoretical support for the analysis on the wellbore stability in deep and ultra deep wells.

Key words： petroleum engineering wellbore stability Biot coefficient Cross-plotting method drainaging experimentation sonic dynamic method influencing factors

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	Articles by authors
	CHENG Yuanfang1
	CHENG Linlin1
	LI Hui1
	2
	HAN Zhongying1
	DENG Wenbiao1
	CHEN Chong1

Cite this article:

CHENG Yuanfang1,CHENG Linlin1,LI Hui1, et al. RESEARCH ON TESTING METHODS OF BIOT COEFFICIENT IN RESERVOIR WITH DIFFERENT PERMEABILITY AND ITS INFLUENCING FACTORS[J]. , 2015, 34(S2): 3998-4004.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1212 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3998

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