低渗透油藏应力敏感性实验研究
Fault-Block Oil & Gas Field(2008)
Abstract
应力敏感性是指油气层的渗透率随有效应力的变化而发生改变的现象。实验是在岩心常规孔隙度、渗透率测试的基础上,对CQ油田某一区块的4块柱塞岩心分别进行了岩心应力敏感性、孔隙体积及压缩系数的测试。结果表明,随着有效应力的增高,低渗透岩心的渗透率明显降低。
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Key words
stress sensitivity,effective stress.,lowpermeability reservoir
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