摘要
大位移井、水平井钻采过程中采用连续管作业时,由于管柱与井壁接触面大、管柱不旋转等因素,会使管柱与井壁之间产生很大的摩阻,导致钻头前进受阻。为解决此问题,设计了一种新型连续油管钻井作业的减阻器。该减阻器由涡轮动力部分和凸轮振动部分组成,由涡轮提供动力,利用螺旋式凸轮轨道实现往复运动,来撞击壳体产生振动。根据给定工况和设计数据,该新型减阻器的振动频率能达到11 Hz,瞬时撞击速度为3.7 m/s,达到现场应用要求。
In drilling process of large displacement well and horizontal well, when coiled tubing technology is used, because of the excessive contact surface between the pipe string and borehole and the unstable rotation of the drilling string, a great friction will be introduced between string and hole wall, leading to the stagnation of the bit. To solve this problem, this paper presents a new type of
tube drag reducer, which consists of turbine power part and cam vibration part. The vibration force is produced by the spiral cam which is in turn driven by the turbine. According to the given working conditions and design data, the vibration frequency of the drag reducer can reach 11Hz, and the instantaneous impact speed is up to 3.7m/s,which satisfies the application requirements.
作者
覃光芬
QIN Guang-fen(Fracturing Crew, Downhole Operation Company of Daqing Oil Field Co.,Daqing 163453,China)
出处
《机电工程技术》
2018年第5期63-65,共3页
Mechanical & Electrical Engineering Technology
关键词
连续管作业
减阻器
涡轮
凸轮
振动
coiled tubing operation；drag reducer；turbine；cam；vibration
