油田开发中岩石压缩系数和孔隙度相关问题探讨

Discussion About Rock Compressibility and Porosity Applied in Oilfield Development

对为什么有人能得出在油田开发中低渗透储集层无应力敏感性,孔隙度不变和低渗透储集层开发无启动压力等错误认识进行了分析,指出了出现错误的根源:一是其错误的假设,二是对概念的随意替换。对岩石力学中的几个基本公式的渊源进行了追溯,以便人们可看到一些研究成果的本源。对岩石孔隙度和岩石压缩系数使用中出现的几个相关问题进行了分析和讨论。阐明了科学研究中如何防止错误的发生,认为只有继承和发展前人研究成果,才可能有创新,才是科学研究的真正出发点;歪曲科学概念,盲目否定前人成果是科学研究中的大忌。

This paper analyzed the misconceptions published in some literatures in recent years that there is no stress sensitivity, porosity is invariable and no threshold pressure in low permeability reservoir during oil field development, and points out the causes of these miscon- ceptions： one is incorrect hypotheses, the other is optional substitution for conceptions. By tracing the sources of a number of basic formulae in rock mechanics, which are the original or fontal researches, some issues about the rock porosity and rock compressibility in field applica- tion are discussed. It is suggested that to prevent the mistakes in scientific researches and make some innovations depends only on inheri- tance and development of previous research results, which is the real starting point of scientific research, while distorting the scientific con- cepts and blindly denying previous achievements should be inhibited in scientific researches.