CAJ | 학술논문

某钻井队在河流穿越施工过程中，先后出现几起钻杆接头螺纹粘扣事故。为了查明此次事故产生的原因，对钻杆接头螺纹宏观形貌、化学成分、接头材料的力学性能、金相组织进行全面的分析。结果表明：此次螺纹接头材质、材料的力学性能均符合标准要求，井队在接立柱过程中，立柱中心轴线与入井钻杆轴线不同心，在螺纹旋合过程中发生错扣是导致接头螺纹粘扣的主要原因。根据失效原因提出了相应改进措施和建议。
모찬정대재하류천월시공과정중，선후출현궤기찬간접두라문점구사고。위료사명차차사고산생적원인，대찬간접두라문굉관형모、화학성분、접두재료적역학성능、금상조직진행전면적분석。결과표명：차차라문접두재질、재료적역학성능균부합표준요구，정대재접립주과정중，립주중심축선여입정찬간축선불동심，재라문선합과정중발생착구시도치접두라문점구적주요원인。근거실효원인제출료상응개진조시화건의。
Some drill pipe joint thread-galling failures were discovered in the drilling crew during the drilling process.In order to find out the cause of the accident,chemical composition analysis, mechanical properties,and micro-structure examination to the joint material and the macro-app e-arance observation to the tool joint threads were taken.The results show that the threaded fasten-ing joint mechanical properties and material conform to the requirements of the standard,there was a central axis deviation of the stands in picking-up process,which lead to joint thread wrong buckle,and it is the main reason that caused joint thread-galling when make-up.Finally,according to the failure reason,puts forward the corresponding improvement measures and suggestions.