Invention Grant
US08235105B2 Mouse hole support unit with rotatable or stationary operation 失效
鼠标孔支持单元,可旋转或静止操作

  • Patent Title: Mouse hole support unit with rotatable or stationary operation
  • Patent Title (中): 鼠标孔支持单元,可旋转或静止操作
  • Application No.: US12946765
    Application Date: 2010-11-15
  • Publication No.: US08235105B2
    Publication Date: 2012-08-07
  • Inventor: Paul Anthony
  • Applicant: Paul Anthony
  • Agent Mark D. Miller; Marcus N. DiBuduo
  • Main IPC: E21B19/10
  • IPC: E21B19/10 E21B23/00
Mouse hole support unit with rotatable or stationary operation
Abstract:
Methods for connecting drill pipe sections together using a support unit comprising an opening, a wall extending around the opening, a plurality of movable slips deployed in the opening, and a plurality of lever assemblies, each lever assembly pivotally attached to the wall and having a proximal end operably associated with at least one of the slips. A first pipe section is rotated against a second pipe section. Upward and downward movement of distal ends of said levers cause the slips to move between extended and refracted positions. In some embodiments, the second pipe section is held stationary while the extended slips, and thus the first pipe section, rotates.
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