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本文从四川大多数碳酸盐岩储层的特征出发,结合地层水活动的各种现象,通过对典型气藏的地质条件与开采动态的解剖认为:在一定范围内封闭的气藏中,一度异常强大的水侵能量主要来源于水体(即油藏工程中的所谓供水区)中的“从动气储”;四川气藏中的水侵分两种基本类型——正常弹性水侵和在从动气储作用下的异常水侵。并分析了两种不同水侵类型在气藏开采中的表现。
Based on the characteristics of most carbonate reservoirs in Sichuan and combining with the various phenomena of formation water activity, this paper anatomizes the geological conditions and mining dynamics of typical gas reservoirs. It is considered that in a closed gas reservoir within a certain period The abnormally strong water invasion energy mainly comes from the “slave gas reservoir” in the water body (the so-called water supply area in reservoir engineering). The water invasion in Sichuan gas reservoir is divided into two basic types - normal elastic water intrusion and Abnormal water invasion under action of gas reserve. And analyzed the performance of two different types of water intrusion in the exploitation of gas reservoirs.