无隔水管钻井液返回管线对接接头设计与分析  

Design and Analysis of Docking Joint of Mud Return Line for Riser-less Drilling

作　　者：王志伟[1] 张云腾[1] 陈国明[1] 赵建亭[2] 田雪 Wang Zhiwei;Zhang Yunteng;Chen Guoming;Zhao Jianting;Tian Xue(Center for Offshore Equipment and Safety Technology,China University of Petroleum（Huadong;The 708 Research Institute,China State Shipbuilding Corporation Limited)

机构地区：[1]中国石油大学(华东)海洋油气装备与安全技术研究中心 [2]中国船舶工业集团公司第七0八研究所

出　　处：《石油机械》2018年第9期48-52,共5页China Petroleum Machinery

基　　金：工信部高技术船舶科研项目“大洋勘探船船型开发”([2016]548).

摘　　要：钻井液返回管线对接接头对无隔水管钻井技术具有重要意义,由于国内无隔水管钻井技术发展缓慢,钻井液返回管线对接接头的研发尚处于起步阶段。鉴于此,针对南海1 500 m作业水深无隔水管钻井系统,设计了钻井液返回管线对接接头;同时提出无隔水管钻井液返回管线张紧力计算公式,计算了返回管线对接接头的张紧力载荷,并利用ANSYS有限元分析软件分别从张紧力载荷与海流载荷2种受力工况进行对接接头的强度校核。分析结果表明:对接接头满足无隔水管钻井工艺要求,强度符合要求,结构安全可靠;随着钻井液密度的增大,返回管线内径越大,对接接头所承受的应力越大。所得结果可为无隔水管钻井技术关键设备的设计提供理论依据。The docking joint for mud return line is of great significance to the riser-less drilling technology. Due to the slow development of domestic riser-less drilling technology, the development of mud return line docking joint is still in its infancy. A mud return line docking joint was designed for a 1 500 m riser-less drilling system in the South China Sea. The calculation formula of the tension force of the mud return line was proposed. The tension load of the docking joint of the mud return line was calculated. The ANSYS finite element analysis software was used to conduct stress check of the docking joint at two kinds of stress conditions： tension load and sea current load. The results showed that the docking joint meets the requirements of the riser-less drilling process with the sound strength and safe and reliable structure. With the increase of the mud density, the larger the inner diameter of the mud return line is, and the higher the stress on the docking joint becomes. The study results can provide a theoretical basis for the design of key equipment of riser-less drilling technology.

关 键 词：无隔水管钻井 对接接头 钻井液返回管线 结构设计 张紧力 有限元 

分 类 号：TE951[石油与天然气工程—石油机械设备]