论文部分内容阅读
研究油层条件下孔隙度、渗透率与其净覆盖压力之间的变化规律，更好地指导油田的开发与调整。利用新引进的８０ 年代末期发展的研究高压孔、渗的新仪器ＣＭＳ－３００ 岩心自动分析仪，对中原油田的天然岩心测试资料进行统计分析与研究。结果表明：油层孔隙度、渗透率与净覆压的关系以一元二次方程最为密切；孔隙度与净覆压间按指数规律拟合时，代表的物理意义更为明确，既能满足精度的要求，又能自动得出岩石的压缩系数。并提出了岩石的压缩系数与岩石的平均水力半径间呈幂律关系；净覆压下油层的渗透率与地面渗透率之比，仅与净覆压的大小有关，与地面渗透率的大小无关等新观点。
The study of the variation of porosity, permeability and net cover pressure under the condition of oil layer can better guide the development and adjustment of the oil field. Using the newly introduced CMS-300 core automatic analyzer, a newly developed high-pressure hole and infiltration instrument developed in the late 1980s, the statistical analysis and research on the natural core test data of Zhongyuan Oilfield were conducted. The results show that the relationship between porosity and permeability and net overpressure is most closely related to the single quadratic equation. When the porosity and net overpressure are fitted by exponential law, the physical meaning of the representative is more clear, which not only satisfies the accuracy Requirements, but also automatically determine the rock’s compression factor. And put forward that the compressibility coefficient of rocks shows a power law relationship with the average hydraulic radius of rock. The ratio of permeability to ground permeability under net overburden is only related to the size of net overpressure and not to the permeability of ground And other new ideas.