河嘉203H含硫水平气井测试工艺实践

河嘉203H井是川东北河坝构造嘉二高压含硫气藏部署的第一口水平井,具有埋藏深、储层压力高、腐蚀分压高、地层易漏失、水平井压井堵漏难度大的特点,通过开展工具优选、管柱结构优化设计、流程优选,并对替浆、放喷油嘴控制及压井等主要工序的施工工艺参数进行研究,形成了河坝嘉二含硫气藏水平井测试工艺技术体系,并在河嘉203H井获得成功应用。

The technological practice of testing HJ203H horizontal sulfurous gas well

HJ203H is the first horizontal well in Jia'er high pressure sulfurous gas reservoir in Northeast Sichuan Heba block.The well is deep with high corrosion partial pressure,formation leaked easily and kill plugging is very difficult.By analyzing the difficulty of the well test,downhole tools were selected,the production string structure and flow chart were optimized,and process control parameters of main ground test procedure were studied,such as the pulp,fuel injector control and killing,etc.As a result,a test technology of horizontal sulfurous gas wells was created and it has been successfully applied in HJ203H well.