摘要
连续油管通过注入头夹持系统时,受到轴向拉力或压力、油管内流体的内压和夹持块夹紧力的作用。为了增加连续油管的下入深度,需要经常增加夹持块的夹紧力。为了评价连续油管的安全性和连续油管的工作安全状态,研究了连续油管在这种复杂应力下的应力状态,对研究连续油管的最大下入深度非常重要。采用有限元软件对夹持块的参数进行优化,使夹持块对连续油管的应力最小。经过结构优化,合理的夹持块可以保护连续油管,最大限度地减少对连续油管的损坏,延长连续油管的使用寿命。
Coiled tubing is subjected to axial tension or pressure,internal pressure of fluid in tubing and clamping force of clamping block when it passes through the clamping system of injection head.In order to increase the penetration depth of coiled tubing,the clamping force of clamping block needs to be increased frequently.In order to evaluate the safety of coiled tubing and the working safety state of coiled tubing,the stress state of coiled tubing under this complex stress is studied,which is very important to study the maximum depth of coiled tubing.Finite element software is used to optimize the parameters of the clamping block so as to minimize the stress of the clamping block on the coiled tubing.After structural optimization,reasonable clamping block can protect coiled tubing,minimize damage to coiled tubing,and prolong the service life of coiled tubing.
作者
郑伟
Zheng Wei(SJ Petroleum Machinery Co.,Sinopec,Jingzhou 434023,China)
出处
《山东化工》
CAS
2019年第9期151-152,154,共3页
Shandong Chemical Industry
关键词
连续油管
注入头
夹持
力学
结构优化
coiled tubing
injection
clamping
mechanics
structural optimization
