煤层气藏应力敏感性实验研究

张亚蒲, 何应付, 杨正明, 刘学伟

doi:10.11764/j.issn.1672-1926.2010.03.518

天然气地球科学 >

2010 , Vol. 21 >Issue 3: 518 - 521

DOI: https://doi.org/10.11764/j.issn.1672-1926.2010.03.518

煤层气

煤层气藏应力敏感性实验研究

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1.中国石油勘探开发研究院廊坊分院，河北廊坊 065007；
2.大庆油田有限责任公司，黑龙江大庆 163712

张亚蒲（1981-），女，河北保定人，工程师，硕士，主要从事煤层气及低渗油藏开发方面的研究.

收稿日期: 2009-08-14

修回日期: 2009-11-24

网络出版日期: 2010-06-10

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Experimental Research on Stress Sensitivity of Coalbed Reservoir

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1.Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina，Langfang 065007，China；2.Daqing Oilfield Company Ltd.，Daqing 163712，China

Received date: 2009-08-14

Revised date: 2009-11-24

Online published: 2010-06-10

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摘要

针对煤层气藏储层应力敏感性强的特点，通过改变围压和孔隙压力，进行了煤层气藏干岩心和含水岩心的应力敏感性实验研究。系统地研究了煤层气藏的岩石变形特征，并将应力敏感性的实验数据拟合得到渗透率随有效压力变化的数学方程。研究结果表明：水相的存在使得岩心的应力敏感性更强，并且这一规律可以用指数函数关系来描述。为煤层气有效合理地开发提供了理论依据。

关键词： 煤层气; 渗透率; 应力敏感性; 有效压力

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张亚蒲, 何应付, 杨正明, 刘学伟 . 煤层气藏应力敏感性实验研究[J]. 天然气地球科学, 2010 , 21(3) : 518 -521 . DOI: 10.11764/j.issn.1672-1926.2010.03.518

Abstract

In view of stress sensitiveness to coalbed methane reservoir, we made the stress sensitiveness experiments of dry and moisture drill cores collected from the coalbed methane reservoir by means of change of peripheral pressure and pore pressure. The experimental data of stree sensitiveness were fitted to obtain the deduced equation of permeability with active pressure after the rock deformation of coalbed methane reservoir was mearured. The results indicated that the existence of water would make the stress sensitiveness of the drill core become stronger. The pattern described by exponential function would offere the experimential reference to the effective and rational development of the coalbed methane.

Key words： Coalbed methane; Permeability; Stress sensitiveness; Active pressure.

参考文献

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