CAJ | 학술논문

通过对钻具的力学性能、失效机理研究及回收钻具失效案例总结分析，得到了钻具在复杂井况下出现的失效形式，建立累积疲劳损伤估算数学模型，根据此数学模型可以拟定钻具检验计划和检验周期。同时，提出了几种常用的效果较好的钻具疲劳损伤无损检测方法。通过钻具回收检测保证了入井钻具质量，对钻井工程中减少钻具失效事故起到了极其重要的作用。
통과대찬구적역학성능、실효궤리연구급회수찬구실효안례총결분석，득도료찬구재복잡정황하출현적실효형식，건립루적피로손상고산수학모형，근거차수학모형가이의정찬구검험계화화검험주기。동시，제출료궤충상용적효과교호적찬구피로손상무손검측방법。통과찬구회수검측보증료입정찬구질량，대찬정공정중감소찬구실효사고기도료겁기중요적작용。
After analyzing the mechanical properties and failure mechanism of drilling tools ,this paper summarized the failure modes of recyclied drilling tool ,and set up the mathematical model of accumulative fatigue damage .By use of this model ,we could make the test plan of drilling tools .It also proposed several commonly used methods of fatigue damage nondestructive test .Through recycling test ,the quality of tools in wells is ensured ,which plays a very important role in the safty production of drilling engineering .