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本文利用实验室资料,指出了胶结较好的砂岩是一准弹性体,论证了砂岩储层的弹性压缩系数的影响因素为有效覆盖压力、砂岩的胶结类型、胶结程度、孔隙度、泥质含量及粒度中值等因素。阐述了砂岩储层弹性压缩对有效孔隙度、空气渗透率的影响,给出了确定岩石孔隙体积压缩系数的方法以及有效孔隙度、空气渗透率校正方法,为确定砂岩孔隙体积压缩系数、地下岩石孔隙度、地下岩石空气渗透率提供了必要的手段。
In this paper, laboratory data is used to show that the cemented sandstone is a quasi-elastic body. The factors affecting the elastic compressibility of sandstone reservoirs are effective covering pressure, sandstone cementation type, cementation degree, porosity and shale content And median size and other factors. The effect of elastic compression of sandstone reservoirs on effective porosity and air permeability is expounded. A method to determine the compressibility of rock pore volume and the method to correct effective porosity and air permeability are given. In order to determine the pore volume compressibility of sandstone, Porosity, permeability of underground rock air provides the necessary means.