东海断桥二井下部钻柱断落原因分析与认识

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Discussion and Recognition about the Cause of Dril ling String of BHA Broken off in Duanqiao No .2 Well, the East China Sea

摘要: 文章针对断桥二井两次下部钻柱断落原因分析,对钻具使用提出合理的建议及预防此类事故注意事项,以便今后尽可能避免此类井下事故的发生。

Abstract: Based on analysis in the cause of drilling string among bottom hole assembly broken off twice in Duanqiao No.2 well, this paper gives reasonable suggestions for avoiding the type of downhole incident in future operation.