Title:
DRILL BITS AND METHODS OF DRILLING CURVED BOREHOLES
Document Type and Number:
WIPO Patent Application WO/2011/031696
Kind Code:
A3
Abstract:
The invention provides drill bits and methods of drilling curved boreholes. One aspect of the invention provides a drill bit including a bit body and one or more blades positioned within the bit body, the one or more blades individually actuatable to a plurality of cut depths. Another aspect of the invention provides a method for drilling a curved borehole. The method includes: providing a drill string including a drill bit including a bit body and one or more blades positioned within the bit body, the one or more blades individually actuatable to a plurality of cut depths; rotating the drill string; and selectively actuating the one or more blades to a plurality of cut depths; thereby drilling a curved borehole.
Inventors:
PAFITIS DEMOSTHENIS (FR)
PABON JAHIR (US)
SIHLER JOACHIM (GB)
PABON JAHIR (US)
SIHLER JOACHIM (GB)
Application Number:
PCT/US2010/048035
Publication Date:
July 14, 2011
Filing Date:
September 08, 2010
Export Citation:
Assignee:
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER HOLDINGS LIMITE
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
PAFITIS DEMOSTHENIS (FR)
PABON JAHIR (US)
SIHLER JOACHIM (GB)
SCHLUMBERGER HOLDINGS LIMITE
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
PAFITIS DEMOSTHENIS (FR)
PABON JAHIR (US)
SIHLER JOACHIM (GB)
International Classes:
E21B7/06; E21B10/42; E21B47/02
Foreign References:
| US20080000693A1 | 2008-01-03 | |||
| US6131675A | 2000-10-17 | |||
| US5484029A | 1996-01-16 | |||
| US6142250A | 2000-11-07 |
Attorney, Agent or Firm:
WELCH, Jeremy P. (Sugar Land, Texas, US)
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