基于正交试验的钻井用水力振荡器结构性能参数设计  

Design on Structural Property Parameters of Hydraulic Oscillator Based on Orthogonal Experiment

作　　者：赵钰[1,2,3] 冯丽莹 涂忆柳 周廪[1,2,3] 许凤华 王鹏 ZHAO Yu;FENG Liying;TU Yiliu;ZHOU Lin;XU Fenghua;WANG Peng(School of Mechanical Engineering,Yangtze University,Jingzhou Hubei 434023,China;Oil and Gas Drilling and Well Completion Tools Research Center,Jingzhou Hubei 434023,China;Hubei Cooperative Innovation Center of Unconventional Oil and Gas,Yangtze University,Wuhan Hubei 430100,China;Shelfoil Petroleum Equipment&Services Co.,Ltd.,Dezhou Shandong 253034,China)

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]湖北省油气钻完井工具工程技术研究中心,湖北荆州434023 [3]长江大学非常规油气湖北省协同创新中心,湖北武汉430100 [4]德州大陆架石油工程技术有限公司,山东德州253034

出　　处：《机床与液压》2018年第17期137-140,132,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(51275057)

摘　　要：水力振荡器用于解决井下摩阻过大所造成的钻进缓慢、卡钻等问题。在螺杆马达已定情况下,振荡器的性能主要取决于动、定阀孔尺寸,及动阀孔偏心距的选取。结构参数选择不合适,如振荡力过小,不能解决由于摩阻过大造成的问题,影响钻井速度,延缓钻井完成时间;如振荡力过大,则会影响其他井下工具正常工作,严重时会造成安全事故。利用Fluent滑移网格及UDF模拟阀组流道在实际工况下的运动状态,计算产生振荡力的压降,并结合试验数据验证了其正确性。为得到不同结构性能参数下的压降数值,对动、定阀孔尺寸及动阀孔偏心距进行正交试验设计,筛选出压降均值为2~4.5 MPa区间的结构参数组合。该研究结果对水力振荡器的设计有重要指导意义。The hydraulic oscillator is used to solve the problems of slow drilling and stuck drilling caused by excessive friction undergound.In the case of the screw motor selected,the performance of the oscillator are mainly determined by the size of moving and fixed valve holes and the eccentricity distance of the moving valve hole.If the parameter is not appropriate,for example,the oscillation force is too small to solve the problem caused by excessive friction.It will affect the drilling speed and delay the completion time of drilling.If the oscillation force is so large,it will affect the normal work of other downhole tools,or even cause serious safety acci-dents.Fluent grid and UDF were used to simulate the motion state of the valve under actual working condition,and calculate the pres-sure drop.The correctness was verified by experimental data.In order to obtain the pressure drop under different parameters of structure performance,the size of moving and fixed valve holes and the eccentricity distance of the moving valve hole were disigned by orthogonal test.According to the requirement,the combination of structural parameters can be selected with the mean pressure drop between 2~4--5 MPa.The research results have important guiding significance for the design of hydraulic oscillators.

关 键 词：水力振荡器 结构性能参数 FLUENT 正交试验 压降 

分 类 号：TE921[石油与天然气工程—石油机械设备]