气层水锁效应与含水饱和度关系

Laboratory testing method of water lock effect of gas reservoir and its relationship with water saturation

针对塔里木油田在气层开发过程中遇到的酸化后返排率低、完井后产量低于中途测试的问题,通过建立一套合理的水锁效应室内评价方法,并进行其与含水饱和度关系的实验研究,认识到水锁效应是造成低渗气层伤害的不可忽视的重要因素,为现场解除水锁和有效开发提供了室内研究依据。

Aiming at the problem of low gas recovery rate after acidizing , sharp decrease of production after completion during gas reservoir development in Talimu Oilfield, through the development of reasonable laboratory evaluation method of water lock effect, and the experiment with relation of water lock effect and water saturation, we realize that water lock effect is the key factor of low permeability gas reservoir pollution. We provide laboratory basis to removal of water lock effect and effective development.