井下安全阀现场操作常见问题及解决办法  

Common issues and solutions for on-site operation of downhole safety valves

作　　者：王福祥 WANG Fuxiang(CNPC,Great Wall Drilling Company,Beijing 100101,China)

机构地区：[1]中国石油集团长城钻探工程有限公司测试公司,北京100101

出　　处：《油气井测试》2023年第5期19-23,共5页Well Testing

摘　　要：伊拉克格拉芙油田使用的BAKER Thunder TE-5型井下安全阀现场应用时常出现不能打开、不能关闭、开启压力偏高和开启后压力下降等情况。对于故障原因的排查,遵循先易后难、先地面后井下的原则。针对地面控制单元及辅助设备设施的故障,通过修复或更换故障零部件的方式来恢复井下安全阀的功能;对于安全阀本体、阀瓣及井下控制管线等地下部分的故障,处置措施则相对困难,当采取常规解决措施无效时,可采取更换安全阀或将安全阀锁定在常开状态进行生产,或结合钢丝作业及连续油管作业的配合施工解决。该方法为后续现场施工提供借鉴和参考,有效防止了井喷,保证了生产安全。In the field application of the BAKER Thunder TE-5 downhole safety valve in the Graff Oilfield in Iraq,various issues have been encountered,including the valve not opening,not closing,high opening pressure,and pressure drop after opening.To troubleshoot the causes of these issues,a systematic approach following the principle of addressing easier problems before tackling more challenging ones and addressing surface issues before downhole ones was applied.For problems related to surface control units and auxiliary equipment facilities,the functionality of the downhole safety valve was restored by repairing or replacing faulty components.In cases where the issues are related to the downhole safety valve itself,the valve disk,or downhole control tubing,the solutions become relatively more complex.When conventional methods prove ineffective,alternative measures such as replacing the safety valve or locking it in an open position for production can be considered.Additionally,coordinated operations involving wireline and continuous tubing can be employed for effective on-site solutions.This approach can serve as a reference for future on-site operations,which may effectively prevent blowouts,and ensure production safety.

关 键 词：完井 井下安全阀 现场应用 故障分析 预防措施 开启压力 关闭压力 

分 类 号：TE35[石油与天然气工程—油气田开发工程]