水力加压器结构设计与性能分析  

Structure Design and Performance Analysis of Hydraulic Press

作　　者：席文奎[1] 贺齐齐 孙东鑫 朱旭辉 Xi Wenkui;He Qiqi;Sun Dongxin;Zhu Xuhui(Mechanical Engineering College,Xi′an Shiyou University,Xi′an,Shaanxi 710065,China)

机构地区：[1]西安石油大学机械工程学院,西安710065

出　　处：《机电工程技术》2022年第3期249-252,共4页Mechanical & Electrical Engineering Technology

摘　　要：为解决水平井钻压传递效率低、井下摩阻大这一问题,在调研水力加压器相关技术基础上,根据水力加压器工作原理,结合各零部件实际设计应用需求,选择合适的设计参数,设计了一款新型双级单行程水力加压器,完成了钻压计算、活塞关键部件设计和密封设计。根据实际工况,主要考虑活塞杆受到的高压钻井液的冲击力。活塞端面受到高压钻井液冲击压力为20 MPa,钻井液密度为1.16 g/cm^(3),活塞端面入口流速为20 m/s,出口流速为自由束。对其关键部件进行了有限元仿真分析,结果表明:设计的水力加压器在模拟实际工况条件下,其结构刚度和材料强度均能满足设计要求;高压流体通过活塞杆件后具有较大速度,为水力加压器下接头连接的液压马达提供了较大的动力,符合设计初衷。In order to solve the problem of low WOB transfer efficiency and large downhole friction in horizontal wells,based on the investigation of related technologies of hydraulic pressurizer,according to the working principle of hydraulic pressurizer and combined with the actual design and application requirements of various parts,a new two-stage single-stroke hydraulic pressurizer was designed by selecting appropriate design parameters,and the WOB calculation,the design of key components of the piston and the design of the seal were completed.According to the actual working conditions,the impact force of the high-pressure drilling fluid on the piston rod was mainly considered.The impact pressure of high-pressure drilling fluid on the piston end face was 20 MPa,the drilling fluid density was 1.16 g/cm^(3),the inlet flow rate of piston end face was 20 m/s,and the outlet flow rate was a free beam.Through the finite element simulation analysis of its key components,the results show that the structural stiffness and material strength of the hydraulic pressurizer can meet the design requirements under the simulated actual working conditions;the high-pressure fluid has a large velocity after passing through the piston rod,which provides greater power for the hydraulic motor connected to the lower joint of the hydraulic pressurizer,which is in line with the original design intention.

关 键 词：水力加压器 力学分析 结构设计 摩阻 

分 类 号：TE921[石油与天然气工程—石油机械设备]