Invention Grant
US08826986B2 Downhole scraper 有权
井下刮板

  • Patent Title: Downhole scraper
  • Patent Title (中): 井下刮板
  • Application No.: US12681010
    Application Date: 2008-10-01
  • Publication No.: US08826986B2
    Publication Date: 2014-09-09
  • Inventor: John C. Wolf
  • Applicant: John C. Wolf
  • Applicant Address: US TX Houston
  • Assignee: M-I L.L.C.
  • Current Assignee: M-I L.L.C.
  • Current Assignee Address: US TX Houston
  • Agency: Osha Liang LLP
  • International Application: PCT/US2008/078409 WO 20081001
  • International Announcement: WO2009/046077 WO 20090409
  • Main IPC: E21B37/02
  • IPC: E21B37/02
Downhole scraper
Abstract:
A downhole tool including a resilient body configured to be disposed on a drill string, the resilient body comprising a plurality of radial blades having an abrasive coating, wherein the radial blades are configured to deflect when inserted into downhole tubing, and wherein the resilient body is configured to allow rotation relative to the drill string. Additionally, a method for cleaning downhole tubing, the method including inserting a resilient scraper disposed on a drill string into the downhole tubing, the resilient scraper including a plurality of radial blades having an abrasive coating. The method further including rotating the drill string, and contacting the resilient scraper to an internal wall of the downhole tubing.
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