Title:
EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH
Document Type and Number:
WIPO Patent Application WO/2012/088323
Kind Code:
A3
Abstract:
An earth removal member with features for facilitating drill-through is provided for drilling with casing or liner applications. In one embodiment, the casing bit includes a tubular body (5); a nose (10) attached to one end of the tubular body (5), wherein the nose (10) includes a blade support (14) and comprises a drillable material; a blade (15) attached to the blade support (14) using mating profiles (31, 43); cutters (20) disposed along the blade (15); and a nozzle (30) disposed in the nose (10).
Inventors:
UGWUOCHA SHARP OKORIE (GB)
RAE STEVEN (GB)
RAE STEVEN (GB)
Application Number:
PCT/US2011/066607
Publication Date:
April 18, 2013
Filing Date:
December 21, 2011
Export Citation:
Assignee:
WEATHERFORD LAMB (US)
UGWUOCHA SHARP OKORIE (GB)
RAE STEVEN (GB)
UGWUOCHA SHARP OKORIE (GB)
RAE STEVEN (GB)
International Classes:
E21B10/42; E21B10/627
Domestic Patent References:
| WO2004076804A1 | 2004-09-10 |
Foreign References:
| GB2294715A | 1996-05-08 | |||
| US20050183892A1 | 2005-08-25 |
Attorney, Agent or Firm:
PATTERSON, William B. et al. (LLP3040 Post Oak Blvd., Suite 150, Houston Texas, US)
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