摘要
为研究井喷高速喷流对应急封井装置与井口对接时的冲击影响规律,应用CFD数值模拟方法研究应急封井装置下放距离、对接偏距、井喷喷速对流场分布、冲击力的影响规律。结果表明:装置下放对接过程中短轴方向所受冲击力增加幅度较大;水平方向对接时,随着偏距的减小,装置所受冲击力降低,且降低速率增加;应急封井装置处于相同高度时井喷流体的喷速越小海底压力的压缩作用越明显,封井装置所受的冲击力越小。研究结果对应急封井装置的下放对接具有指导意义。
In order to study the impact influence of high-speed blowout jet on the docking of emergency well plugging device and wellhead,the CFD numerical simulation method was used to study the influence of the lowering distance,docking offset and blowout injection velocity on the flow field distribution,impact force and resultant moment.The results showed that the impact force on the short axis direction increased greatly during the lowering and docking process of device.When docking in the horizontal direction,the impact force on the device decreased with the decrease of offset,and the decrease rate increased.With the increase of wellhead injection velocity,the impact resultant moment on the device increased linearly,which increased the risk of device thread seal failure and drill pipe fatigue fracture.
作者
李莹莹
任美鹏
孙晓峰
毛宁
谢仁军
吕鑫
葛阳
LI Yingying;REN Meipeng;SUN Xiaofeng;MAO Ning;XIE Renjun;LYU Xin;GE Yang(State Key Laboratory of Natural Gas Hydrates,Beijing 100028,China;CNOOC Research Institute,Beijing 100028,China;School of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2021年第4期12-16,共5页
Journal of Safety Science and Technology
基金
天然气水合物国家重点实验室开放基金课题项目(CCL2020RCPS0224ZQN)。
关键词
应急封井装置
下放对接
井口喷速
偏距
冲击力
emergency well plugging device
lowering and docking
wellhead injection velocity
offset
impact force
