...
【24h】

Solutions

机译:解决方案

获取原文
获取原文并翻译 | 示例
           

摘要

Baker Hughes launched its TerrAdapt adaptive drillbit, which uses self-adjusting depth-of-cut (DOC) control elements to automatically change its aggressiveness based on the formation it is drilling through to mitigate vibrations, stick-slip and impact loading. A fixed-DOC bit will drill smoothly in some areas, but will perform erratically and inefficiently in others because of vibrations that occur when the bit transitions between different rock types, causing stick-slip, Baker Hughes said. During stick-slip events, the bit's bite becomes too aggressive, causing it to "stick" and stop rotating, while the drillpipe behind it continues to wind up like a spring until the bit releases, or "slips," and begins spinning uncontrollably. These stick-slip events dramatically increase drilling costs by reducing rate of penetration (ROP), and can seriously damage the bit and other expensive mechanical and electrical bottom hole assembly (BHA) components. When this happens, operators have to make extra trips to replace the bit/ BHA, or continue to drill with diminished performance.
机译:贝克休斯(Baker Hughes)推出了其TerrAdapt自适应钻头,该钻头使用自调节切深(DOC)控制元件,可根据钻探的地层自动改变其侵略性,从而减轻振动,粘滑和冲击载荷。贝克休斯说,固定DOC钻头将在某些区域钻探平稳,但由于在不同岩石类型之间过渡时会发生振动,从而产生粘滑现象,因此在其他区域的钻探性能不稳定。在发生粘滑现象时,钻头的咬合力变得太强,导致其“粘住”并停止旋转,而其后面的钻杆则像弹簧一样继续上紧,直到钻头松开或“滑落”,并开始不受控制地旋转。这些粘滑事件通过降低钻速(ROP)极大地增加了钻井成本,并且可能严重损坏钻头以及其他昂贵的机械和电气底孔组件(BHA)组件。发生这种情况时,操作员必须进行额外的行程来更换钻头/ BHA,或者继续钻探性能下降的钻探。

著录项

  • 来源
    《Offshore Engineer》 |2017年第4期|60-60|共1页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号