连续油管在海洋垂直立管中作业的轴向力传递  

Computational Study on Axial Load Transfer Behavior of A Coiled Tubing Working in A Marine Vertical Riser

作　　者：陈迎春[1] 张仕民[1] 王文明[1] 熊明皓 杨德福[1] 李寅[2] 

机构地区：[1]中国石油大学(北京)机械与储运工程学院,北京102249 [2]长城钻探工程技术研究院井下所,辽宁盘锦124010

出　　处：《石油矿场机械》2015年第5期17-21,共5页Oil Field Equipment

基　　金：国家自然科学基金青年科学基金项目(51309237);中国石油科技创新基金研究项目(2012D-5006-0608)

摘　　要：由于刚度较低,连续油管在进行海洋垂直式立管清管作业时可能会发生屈曲,从而导致其顶部提供的轴向载荷将不能全部传递到底部,影响正常作业。通过数值模拟,研究了连续油管在海洋垂直式立管中作业时的轴向力传递特性。研究结果表明:当立管长度一定时,连续油管轴向载荷传递效率将会随着连续油管与立管之间的环空间隙的增大而减小;当连续油管与立管之间的环空间隙一定时,连续油管轴向载荷传递效率将会随着立管长度的增大而减小。该研究成果将会对连续油管进行海洋垂直式立管清管作业提供重要理论依据。Due to its low stiffness,Coiled Tubing （CT） would buckle when proceeding marine ver- tical riser pigging operation. In that case, the injecting force would not be able to completely transferinto its end,which would finally damage CT and riser and make the operation failed. A computa- tional study is preceded on axial load transfer behavior of CT working in a marine vertical riser. Results shows that axial force transfer efficiency of inner pipe will decrease with annular clearance increasing when the length of outer pipe is fixed;the axial force transfer efficiency of inner pipe will decrease with the increasing of riser length when the annular clearance is fixed. The research done above might provide important theoretical supports for the marine riser pigging operation.

关 键 词：连续油管 海洋垂直式立管 清管作业 轴向载荷 传递特性 

分 类 号：TE933.801[石油与天然气工程—石油机械设备]