水力喷射压裂工具问题分析及工艺优化

摘要

水力喷射压裂技术具有管柱结构简单, 节省作业时间, 适应范围广等优点, 已成为一项比较成熟的压裂技术.但是, 该技术在施工过程中广泛存在射孔效率低, 工具失效等问题.为了提高水力喷射压裂工具的施工效率, 分析了问题产生的原因, 优化了工艺管柱方案及配套工具, 并进行了现场试验.试验结果表明, 改进后的工艺管柱方案合理, 工具性能大幅提升, 施工效率明显提高.%Hydraulic jet fracturing technology has become a relatively mature fracturing technology by its advantages of simple string structure, time saving and wide application range however with many problems such as low perforation efficiency and tool failures during the construction.In order to improve the construction efficiency of hydraulic jet fracturing tool, the reasons for the problems have been analyzed, the process pipe string scheme and supporting tools have been optimized and the field application tests have been performed.The experimental results show a reasonable improved process string scheme, the greatly enhanced tool performance and higher construction efficiency.