摘要
排替压力是评价盖层物性封闭能力的最重要参数。盖岩排替压力可以通过实验法和计算法两种方法获得。根据两种方法的运用条件，对其在盖层物性封闭能力评价中所起的作用进行了深入研究。提出直接驱替法获得的盖岩排替压力最能反映盖岩的实际物性封闭能力；利用声波时差计算盖岩排替压力较实测盖岩排替压力有更大的信息量，对于盖层物性封闭能力的剖面研究以及探井多且分布均匀区的盖层物性封闭能力的平面研究具有重要意义；利用地震层速度计算盖岩排替压力可获得较利用声波时差计算盖岩排替压力更多的信息，对于探井少且分布不均匀区的盖层物性封闭能力的平面研究具有重要意义。
The deplacement pressure is the most important parameter evaluating capillary sealing ability of caprocks. Deplacement pressure of caprocks Can be obtained through experiments and ealculations. According to the application conditions of the two methods, this paper makes in-depth study of their action in evaluating capillary sealing ability of caprocks. The deplacement pressure obtained by direct deplacement method can reflect the actual capillary sealing ability. The calculation method for deplacement pressure by interval transit time can obtain more information than the method of measuring deplacement pressure of caprocks. It is of important significance to study on capillary sealing ability of caprocks in section and plane research on capillary sealing ability of caprock in the region where there are many wells and the wells are well-distributed. The method to calculate deplacement pressure of caprocks by seismic interval velocity can obtain more information than the calculation method with interval transit time . It is of important significance to plane research on capillary sealing ability of caprock in the region where there are a few wells and the wells are not well-distributed.
出处
《中国海上油气（地质）》
1995年第2期83-88,共6页
China Offshore Oil and Gas(Geology)
