摘要
裂缝性低渗透油气藏在开发过程中存在明显的应力敏感现象,本文中采用变围压的室内试验方法对裂缝性低渗岩石的孔隙度、渗透率进行了实验和分析,以研究在裂缝性低渗气藏中岩石孔隙度、渗透率与有效应力之间的关系。实验结果表明:岩石的孔隙度和渗透率随有效应力的增加而呈规律性减小,并且发生了不可逆的应力损害。岩石表现出极强的应力敏感性。
There exists obvious stress-sensitive in the development of fractured low permeability reservoirs.Variable peripheral pressure,which is the laboratory test method,is used in this article to carry on the experiments and analyses upon porosity and permeability of fractured reservoir with low permeability to investigate the laws between the porosity,permeability of rock and the effective pressure.It is proved by experiments that the porosity and permeability of rock will drop regularly along with the increasin...
出处
《内蒙古石油化工》
CAS
2009年第6期100-102,共3页
Inner Mongolia Petrochemical Industry
关键词
低渗透油气藏
应力敏感
孔隙度
渗透率
应力敏感指数
Low permeability reservoir
Stress sensitivity
Porosity
Permeability
Stress sensitive coefficient
