岩石压缩系数对油藏动态储量计算结果的影响

油藏动态地质储量的计算结果受生产数据、油藏测压数据以及岩石和流体物性等参数的影响，本文主要研究了岩石压缩系数对储量计算结果的影响。目前确定岩石压缩系数的方法主要有实验测量法和Hall图版经验公式法，由于Hall图版由实验值统计而来，因而这两种方法基本上是一致的。用Hall图版确定的岩石压缩系数明显偏高，且Hall图版错误地显示了岩石压缩系数与孔隙度的逻辑关系，因而都是一些错误的数值。用笔者提出的岩石压缩系数与孔隙度的关系曲线确定的岩石压缩系数一般都较低，．本文算例表明，用不同方法确定的压缩系数对储量计算结果有较大的影响。由于岩石压缩系数的数值通常较小，建议今后的油藏工程研究中，忽略岩石的压缩系数，以免对动态储量的计算结果造成不必要的影响。

Effect of rock compressibility on reservoir dynamic reserves determination

Dynamic reserves determination is affected by production data, reservoir pressure and physical properties of reservoir rocks and fluids. The effect of rock compressibility on reserves calculation is studied in this paper. Rock compressibility can be experimented in core labs, but quite often it was determined through Hall curve, which was obtained from core analysis data. Hall curve shows a wrong logic relation between rock compressibility and porosity, and provides abnormally high values of rock compressibility. With the new curve proposed by Li Chuanliang, compressibility of rock usually possesses quite low values in the porosity range of reservoir. The study of this paper proves that the values of rock compressibility have enormous influence on the results of reservoir reserves calculation. And it is suggested to neglect the rock compressibility in the future research of reservoir engineering.