油藏条件下岩石孔隙度与压缩系数的测试计算方法

本文分析了油藏岩石孔隙体积、孔隙度、压缩系数随压力的变化关系，并在实验数据的多项式回归基础上，提出了地层条件下岩石石孔隙度、平均与瞬时孔隙体积压缩系数的计算方法，经过对中原、新疆、四川等油气田岩石测试数据处理的实践验证，说明这些方法具有准确、便于计算等优点。

Study of The Method of Measuring and Calculating Porosity and Pore Volume Compressibility of Rock Under The Reservoir Conditions

This paper analyses the relation of the variation of reservoir rock pore volume, porosity and compressibility with the effetive overburden pressure,and basing on the polynomials regreasion of rock experimental data,it presents the calculating. equations of rock porosity,mean and instaneous pore volume compressibility under the reservoir condition. The practical applieation of these equations to processsingrock testing date of Zhongyuan,Xinjing,and Sichuan oiifields proves that. this method is precise and convenient for calculation.