Invention Grant
US08479844B2 Distance holder with jet deflector 有权
带喷射偏转器的距离支架

  • Patent Title: Distance holder with jet deflector
  • Patent Title (中): 带喷射偏转器的距离支架
  • Application No.: US12531499
    Application Date: 2008-03-20
  • Publication No.: US08479844B2
    Publication Date: 2013-07-09
  • Inventor: Jan-Jette Blangé
  • Applicant: Jan-Jette Blangé
  • Applicant Address: US TX Houston
  • Assignee: Shell Oil Company
  • Current Assignee: Shell Oil Company
  • Current Assignee Address: US TX Houston
  • Priority: EP07104670 20070322
  • International Application: PCT/EP2008/053340 WO 20080320
  • International Announcement: WO2008/113843 WO 20080925
  • Main IPC: E21B10/60
  • IPC: E21B10/60 E21B7/18
Distance holder with jet deflector
Abstract:
A distance holder for connection to, and rotation with, a drill string in an earth formation drilling device arranged to supply a jet of abrasive fluid for the purpose of providing a borehole by removing earth formation material through abrasion, comprises a chamber that is essentially rotational symmetric and which faces the earth formation material, and a jet nozzle arranged for discharging a jet of the abrasive fluid in the chamber. The chamber comprises a deflector positioned in the path of the fluid jet discharged from the jet nozzle.
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