再谈岩石的压缩系数——回应高有瑞博士

One more discussion on the compressibility of reservoir rocks: in reply to Dr.Gao Yourui

针对高有瑞博士在《基质型灰岩储层岩石压缩系数的确定》一文中所提出的观点与方法进行了回应与点评,认为弹性模量法克服了体积法的缺陷,所测量的岩石压缩系数呈现出了正确的逻辑关系,即高孔高压缩和低孔低压缩,而且测量的压缩系数数值都远低于地层流体;室内实验测量的岩石压缩系数只与孔隙度和岩石类型有关,与地层压力没有关系,因为室内测量都是在岩石的弹性变形阶段进行的。

The viewpoints paper Determining rock and method presented in the compressibility for matrix limestone reservoir by Dr. Gao Yourui are responded and reviewed in this paper. It is considered that the method of elastic modulus can overcome the defects of the volume method, and that its measured rock com pressibility is in a normal logic relationship, namely the high porosity companioning high compressibility and the low porosity companioning low compressibili ty, and far lower than the compressibility of formation fluids. Furthermore, the compressibility measured by inhouse experiments is only a function of porosity and rock type, and independent of formation pressure, be cause the inhouse measurements are all done during the elastic deformation of rocks.