直井测斜泥浆脉冲发生器阀头参数优化研究  

STUDY ON THE PARAMETER OPTIMIZATION OF VALVE HEAD OF VERTICAL WELL INCLINOMETER

作　　者：汤历平[1] 刘宸希 张磊[2] 李富强 夏洪运 阳杰 丁俊[1] TANG LiPing;LIU ChenXi;ZHANG Lei;LI FuQiang;XIA HongYun;YANG Jie;DING Jun(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu 610500,China;Engineering Technology Research Institute,CNPC Xibu Drilling Engineering Company Limited,Urumqi 830000,China;Karamay Drilling Company Limited,CNPC Xibu Drilling Engineering Company Limited,Karamay 834000,China)

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石油集团西部钻探工程有限公司工程技术研究院,乌鲁木齐830000 [3]中国石油集团西部钻探工程有限公司克拉玛依钻井公司,克拉玛依834000

出　　处：《机械强度》2023年第5期1130-1140,共11页Journal of Mechanical Strength

基　　金：国家自然科学基金青年科学基金(51904262)资助。

摘　　要：直井测斜仪广泛应用于井下数据测量,其中传输数据的泥浆脉冲发生器的性能对所测数据的精确性和稳定性具有重要影响,而泥浆脉冲发生器阀头的可靠性是保证井下数据高效、精确和完整传输的关键。首先,基于脉冲发生器的工作原理,阐述了直井测斜仪中脉冲发生器的结构,建立脉冲发生器阀头的物理及理论模型,基于冲蚀理论和薄壁孔节流模型等,确定影响脉冲发生器阀头性能的参数主要有节流孔槽口倾角α及阀头倾角β。其次,采用离散相模型(Discrete Phase Model,DPM)研究不同节流孔槽口倾角α及阀头倾角β对阀头附近流场特性和阀头所受压强及其分布的影响,基于仿真分析确定最优阀头参数为α=25°、β=45°。最后,将参数优化后的阀头在滴西某井开展现场测试,通过与优化前的应用对比,测试结果验证了数值仿真的可靠性。The vertical well inclinometer is widely used in downhole data measurement,wherein the mud pulse generator used for data transmission has substantial significance to the accuracy and stability of data.For this instrument,the performance of its mud pulse generator valve head is the key to ensure the efficient,accurate and complete transmission of downhole data.Firstly,the structure of pulse generator in the vertical well inclinometer is described,followed by the presentation of the physical and theoretical model of pulse generator valve head.Based on the erosion theories and thin-wall hole throttling model,the main parameters that affect the performance of pulse generator valve head are determined,including the throttling hole slot angleαand the valve head angleβ.Secondly,with using the discrete phase model(DPM),the influences of throttle slot angleαand valve head angleβon the flow field characteristics near the valve head and the pressure distribution of the valve head are investigated.In terms of the simulation,an optimized parameter set of the valve head isα=25°andβ=45°.Finally,valve heads with optimized parameters are tested in a certain well of Dixi,showing a good accuracy with the numerical simulation with comparing the results before optimization.

关 键 词：直井测斜仪 脉冲发生器 阀头 离散相模型(DPM) 流场 

分 类 号：TE927[石油与天然气工程—石油机械设备]