摘要
针对XX9超深井射孔时管柱从射孔枪母接头断裂掉井、XX1超深井射孔测试联作时管柱从封隔器下变扣接头断裂掉井、X209H47-8页岩气井分簇射孔管柱从选发母接头断裂掉井这3次事件,对失效接头进行了化学成分分析、硬度测试、冲击测试、金相测试、扫描电镜分析、扫描电镜-X射线能谱分析。在理化检验分析的基础上,结合射孔设计、射孔器材加工质量、井筒条件、射孔冲击载荷模拟结果等对这3起事件进行了剖析和探讨,提出以上异常现象的诱发因素及可能存在的原因。针对射孔管柱断裂失效原因,提出增大设计安全系数、提高射孔用材料检测标准、优化射孔工艺及射孔管柱配置等控制措施以提高类似井射孔作业可靠性。
In view of three incidents that the perforation gun string broke down from the male joint in XX9 well,the perforation testing string broke down from the crossover joint below the packer in XX1 ultra-deep well,and multi-cluster perforation gun string broke down from the selected switch male joint in X209h47-8 shale gas well,we analyze the fractured perforation string by physical and chemical inspection such as chemical composition analysis,hardness testing,impact testing,metallographic testing,SEM analysis,SEM-EDS analysis.On the basis of these inspection and analysis,combined with perforation design,processing quality of perforating equipment,wellbore conditions,perforation impact load simulation results and so on,this paper analyzes and discusses these incidents,and puts forward the inducing factors and possible causes of the above abnormal phenomena.In view of the above reasons of perforation string fracture failure,some control measures are put forward,such as increasing safety factor of perforation design,improving testing standard of perforation materials,optimizing perforation technology and perforation string configuration,so as to improve the reliability of perforation operation in similar wells.
作者
何新兴
陈建波
刘洪涛
马自强
刘会锋
林智毅
HE Xinxing;CHEN Jianbo;LIU Hongtao;MA Ziqiang;LIU Huifeng;LIN Zhiyi(Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;Southwest Branch, China Petroleum Logging CO. LTD., Chongqing 400021, China)
出处
《测井技术》
CAS
2021年第2期222-226,共5页
Well Logging Technology
基金
国家重大专项“超深超高压高温气井优快建井与采气技术”(2016ZX05051003)。
关键词
射孔技术
断裂失效
数值模拟
冲击载荷
金相测试
扫描电镜分析
perforation technology
fracture failure
numerical simulation
shock load
metallography test
scanning electron microscopy analysis
