摘要
水力振荡器是一种高效减摩降阻钻井工具,能有效降低滑动钻进过程中钻具与井壁间的摩擦力,改善钻压传递、减小井下扭矩、增加PDC钻头的使用寿命。文章基于试验及大量作业案例对影响水力振荡器工作性能的关键因素进行了探究,着重研究了碟簧、单螺杆马达、振动频率、振幅对水力振荡器工作性能的影响。结果表明,216 mm井眼用水力振荡器宜选用单片变形值在4~6 mm的碟簧,30~40片碟簧既可满足水力振荡器工作需要又能减少相互摩擦带来的影响;水力振荡器振幅宜控制在10~15 mm,工作频率宜控制在14~16 Hz。
The hydraulic oscillator is a kind of effective friction-reducing drilling tool. It can effectively reduce the friction between the drilling string and borehole wall during sliding drilling,the WOB transfer improved,downhole torque reduced and thus the life cycle of PDC bits elongated. In this paper,the effects of the disc spring,single screw motor,vibration frequency and amplitude on the performance of the hydraulic oscillator are analyzed. The results show that the disc spring for the hydraulic oscillator used in the 8-1/2 " hole should have single chips with deformation value in 4 ~ 6 mm,30 ~ 40-chip disc spring can satisfy the hydraulic oscillator needs and reduce the friction between chips. The hydraulic oscillator amplitude should be controlled within 10 ~ 15 mm,oscillation frequency controlled within 14 ~ 16 HZ.
出处
《钻采工艺》
CAS
北大核心
2018年第1期78-80,共3页
Drilling & Production Technology
关键词
水力振荡器
碟簧
振动频率
振幅
优化设计
hydraulic oscillator
disc spring
vibration frequency
amplitude
optimal design
