方钻杆上部旋塞阀失效分析及其改进建议

【摘要】 通过对塔里木探区某井发生的两起上部方钻杆旋塞阀断裂事故的失效分析,指出了造成事故的原因。并通过对方钻杆旋塞阀标准发展过程的回顾与探讨,提出了具体的对其质量(结构、材料性能)进行改进的方案以及现行标准修订的建议。更多还原

【Abstract】 two failure analyses of upper tap valve fracturing on the kelly happened in a well of Tarim Exploration Area, the paper points out the reasons of the accidents. And by reviewing and investing the standard development process of the tap valve, practieal plans of improving the qualities (structure and material performances) of the tap valve are put forward and suggestions for revising the existing standards are also made in the paper.更多还原