页岩气开发中连续油管管体失效的原因分析及对策

Cause Analysis and Countermeasures of Coiled Tubing Failure in Shale Gas Development

在页岩气开发中,连续油管的应用迅速普及。然而,连续油管在页岩气开发与在常规油气井开发中的工艺及工况均存在显著差异,导致两者失效原因明显不同,故连续油管管体失效始终是页岩气开发中面临的一个重要难题。连续油管失效是直接影响连续油管作业成本以及作业安全的主要因素,因此寻找连续油管在页岩气开发中管体失效的原因和采取有效预防措施显得十分重要和迫切。管体失效的有效解决可为连续油管在页岩气开发中的安全性能评估提供重要依据,明显提高连续油管服役寿命和增加经济效益。

Coiled tubing is more and more widely used in the development of shale gas.However,due to the significant differences in the process and working conditions of coiled tubing between shale gas development and conventional oil and gas development,the fail⁃ure causes of coiled tubing are different.The failure of coiled tubing is always an important problem in shale gas development.Coiled tubing failure directly affects the cost and safety of coiled tubing operation.This paper analyzes the causes of the failure of coiled tub⁃ing in shale gas development,and gives the corresponding effective preventive measures,which can provide an important basis for the safety performance evaluation of coiled tubing,improve the service life of coiled tubing,and increase economic benefits.