水平井用套管接头评价方法研究

Study on Evaluation Method of Casing Joint for Horizontal Well

概述了水力压裂技术采用的套管接头性能评价方法的发展史,重点研究了API TR 5SF套管连接性能评估方法。研究表明,API TR 5SF是根据多段水平压裂井(MFHW)中存在的工艺驱动循环载荷指定的套管接头评价协议,该协议允许根据用户的需求灵活定制检测方案,推荐试验程序遵循接头上卸扣安装载荷、下套管载荷、压裂载荷、生产载荷的加载顺序。最后,以大位移水平井用套管接头和一种半直连型套管接头为例,根据用户需求按照API TR 5SF制定了满足要求的评价试验程序。

The development history of casing joint performance evaluation method used in hydraulic fracturing technology is summarized and the evaluation method of API TR 5SF casing connection performance is focused.The research shows that API TR 5SF is a casing joint evaluation protocol based on the process driven cyclic load in MFHW well.The protocol allows the flexible detection scheme according to the needs of users,and the recommended test procedure follows the loading sequence of the connection makeup loads,casing running loads,stimulation loads and production loads.Finally,taking the casing joint for extended reach horizontal well and a semi-direct connection casing joint as an example,the evaluation and test procedures meeting the requirements are formulated according to API TR 5SF according to the needs of users.