盖岩排替压力研究

RESEARCH ON THE DISPLACEMENT PRESSURE OF CAPROCK

在指出吸附法、高压压汞法测试盖岩排替压力存在问题的基础上,论述了直接驱替法测试盖岩排替压力的合理性,并对直接驱替法进行了改进。通过实验测试与理论推导,实现了饱和不同流体盖岩排替压力的转换,导出了排替压力温度校正公式,提出了利用声波时差直接计算盖岩排替压力的思路和方法。

We discussed the reasonability to measure the displacement of caprock by themethod of direct displacement, and improved the measurement method. The displace-ments of caprock saturated ordinally by water and kerosene are exchanged. According toexperiment and theory of displacement, the rectification formation of displacement ontemperature is deduced. The thought and method to calculate directly the displacementof caprock by the acoustic time differences are introduced.