深水钻井平台运动对无隔水管环境下钻柱的影响  

Drilling Platform Motion Effects on the Drill String of Deepwater Riserless Operational Mode

作　　者：苏堪华[1] 万微[2] 刘继林[1] 齐成伟[1] 

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆401331 [2]西南石油大学,成都610500

出　　处：《科学技术与工程》2013年第7期1734-1739,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51004119);重庆市教育委员会科学技术研究项目(KJ121416);首批重庆市高等学校青年骨干教师资助计划资助

摘　　要：深水无隔水管钻井环境下,裸露在海水中的钻柱受到复杂动力作用。在考虑深水钻井平台运动、波流共同作用情况下,建立了深水无隔水管环境下钻柱受力理论模型。算例分析表明,钻井平台的慢漂运动对裸露在海水中的钻柱变形和受力有一定的影响。在满足强度要求的情况下,尽量选用直径较小的钻柱。无隔水管环境下,裸露在海水中的钻柱在泥线以下的长度越长,则钻柱上部所受拉力越大,从而可使泥线附近钻柱段的变形和受力情况得到改善。The drill string of deepwater riserless operational mode exposed in seawater bears complex forces during drilling operation. Consider the drilling platform motion and wave-current interaction, a dynamic model and numerical solution method of drill string during riserless drilling operation was established. Example analysis illus- trated that the long term drift of platform has certain impact on the drill pipe deformation and stress. To meet the strength requirements, the smaller diameter drill string is required. The longer length of drill string below mudline causes the greater pulling force on the top of drill string exposed in seawater. Thereby the deformation and stress of the drill string near the mudline can be improved.

关 键 词：深水钻井 平台运动 无隔水管 钻柱 力学分析 

分 类 号：TE52[石油与天然气工程—油气田开发工程]