库车山前复合盐膏层复杂事故处理及分析

Treatment and analysis of complex accidents of compound salt gypsum layer in front of Kuqa mountain

库车山前复合盐膏层埋深和厚度大,分布复杂。钻井过程中受盐膏层蠕变、盐间高压层和薄弱层共存、盐底卡层困难等因素影响,井下事故频发。本文重点分析事故发生原因并提出处理对策,对现场实际生产具有一定的指导意义。

The compound salt gypsum layer in front of Kuqa mountain is deep and thick,and its distribution is complex.In the process of drilling,due to the creep of salt gypsum layer,the coexistence of high-pressure layer and weak layer between salts,and the difficulty of salt bed sticking,downhole accidents occur frequently.This paper focuses on the analysis of the causes of the accident and puts forward countermeasures,which has certain guiding significance for the actual production on site.