Invention Grant
- Patent Title: Distance holder with jet deflector
- Patent Title (中): 带喷射偏转器的距离支架
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Application No.: US12531499Application Date: 2008-03-20
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Publication No.: US08479844B2Publication 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

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.
Public/Granted literature
- US20100084195A1 DISTANCE HOLDER WITH JET DEFLECTOR Public/Granted day:2010-04-08
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