摘要
为研究智能完井井下液压解码器内的一种微型液控单向阀的动态响应和可靠性,基于动网格理论建立了该阀的三维流固耦合分析模型,结合该阀的实际工况,开发了一套新的UDF程序,利用Fluent 6DOF方法求解阀芯在高压油液和微型液缸共同作用下的运动现象,获得了阀芯的瞬时位移曲线和速度曲线,以及阀芯表面的压力场和速度场。研究结果表明:在新开发的UDF程序作用下,该微型液控单向阀在1 ms内就完成了开启过程,实现了微型液控单向阀由关闭状态至完全开启的高速通流过程的动力学响应;新开发的UDF程序解决了阀芯在运动过程中的振动问题,同时验证了微型液控单向阀作为解码器基本控制单元的可靠性。仿真结果与实际工作情况高度一致,对现场应用具有重要的指导作用。
In order to study the dynamic response and reliability of a miniature liquid-controlled check valve in downhole hydraulic decoder for intelligent well completion,based on the dynamic grid theory,a three-dimensional fluid-structure coupling analysis model of the valve was established,and a new UDF program was developed based on the actual working conditions of the valve.Fluent 6 DOF method is used to solve the motion phenomenon of the valve core under the combined action of high pressure oil and micro hydraulic cylinder,and the transient displacement curve and velocity curve of the valve core were obtained as well as the pressure field and velocity field on the surface of the valve core.The study results show that under the action of the newly developed UDF program,the miniature liquid-controlled check valve completes the opening process within 1 ms,and realizes the dynamic response of high-speed flow process of the miniature liquid-controlled check valve from the closing state to the fully opening.The newly developed UDF program solves the vibration problem of the valve core in the process of motion,and simultaneously verifies the reliability of the miniature liquid-controlled check valve as the basic control unit of the decoder.The simulation results are highly consistent with the actual work status,and have an important guiding role for application.
作者
谢小路
何东升
张林锋
李川
王波
代辉
Xie Xiaolu;He Dongsheng;Zhang Linfeng;Li Chuan;Wang Bo;Dai Hui(School of Mechanical and Electrical Engineering,Southwest Petroleum University)
出处
《石油机械》
北大核心
2022年第2期59-65,共7页
China Petroleum Machinery
基金
“十三五”国家科技重大专项课题“深水测试风险评估与智能完井及井筒完整性研究”之子专题“深水智能完井井下流量控制关键技术研究”(2016ZX05028-001-006)。
