套筒型钻井方位控制器组合钻具的研究与应用

• 作 者: 高志强 刘玉石 谢力能
• 机 构: 石油勘探开发科学研究院,石油勘探开发科学研究院,石油勘探开发科学研究院,
• 出 处: 石油学报
• 发表日期: 1991年03期
• 关键词: 井身质量 井眼方位角 钟摆钻具 定向钻井 井眼轨迹 变向器 定向井 筒型 井斜角 方位变化

套筒型钻井方位控制器能够有效地控制井眼方位角的变化。它可以抵抗地层的自然漂移作用,得到稳方位钻进或小幅度扭方位的效果,避免或减少使用井下动力钻具进行扭方位纠偏的操作,这样既节省钻井成本,又能提高井身质量,它的研制成功,为解决定向井转盘钻井控制方位角变化率提供了一种有效的专用工具。文中论述了套筒型钻井方位控制器的运功机理,并对其钻具组合进行了理论分析,同时介绍了六个油田六十多次的试验试用情况。实践证明,它的功能与国外同类产品“浆片式变向器”相比,具有较大的优越性。

The sleeve-type drilling azimuth controller can effectively control the change of the borehole azimuth. It can resist the natural drift of strata and get the effect of steady azimuth drilling or small torsional azimuth to avoid or reduce the operation of using the downhole power drill to correct the torsional azimuth, thus not only saving the drilling cost but also improving the wellbore quality, Its successful development provides an effective and special tool for solving the rate of change of azimuth of directional well turntable drilling control. In this paper, the operational mechanism of the sleeve-type drilling azimuth controller is discussed, and the theoretical analysis of its drilling assembly is made. At the same time, more than 60 trials in six fields are introduced. Practice has proved that its function and foreign similar products “blade-type converter” compared with greater advantages.