Title:
DUAL ANCHORING TUBULAR BACK-OFF TOOL
Document Type and Number:
WIPO Patent Application WO/2010/148316
Kind Code:
A3
Abstract:
A back-off tool for use in breaking a joint of a tubular disposed in a well. The tool is dual anchoring in nature such that breaking of the joint may be achieved with a degree of precision heretofore unavailable. Additionally, the dual anchoring nature of the tool at both sides of the joint allows for power requirements to be met through use of a dowhole power source incorporated into the tool. As a result, the use of heavier power carrying cables and equipment may be avoided as well as explosives or similarly hazardous and/or imprecise measures.
Inventors:
BOLZE VICTOR M (US)
Application Number:
PCT/US2010/039192
Publication Date:
April 21, 2011
Filing Date:
June 18, 2010
Export Citation:
Assignee:
SCHLUMBERGER CA LTD (CA)
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDING LTD
BOLZE VICTOR M (US)
SCHLUMBERGER TECHNOLOGY BV (NL)
PRAD RES & DEV LTD
SCHLUMBERGER SERVICES PETROL (FR)
SCHLUMBERGER HOLDING LTD
BOLZE VICTOR M (US)
International Classes:
E21B23/06; E21B33/12
Domestic Patent References:
| WO1997019248A2 | 1997-05-29 |
Foreign References:
| US5404944A | 1995-04-11 | |||
| US5454420A | 1995-10-03 | |||
| US6752215B2 | 2004-06-22 |
Other References:
See also references of EP 2443311A4
Attorney, Agent or Firm:
FONSECA, Darla, P. et al. (200 Gillingham Lane Md-2009Sugar Land, TX, US)
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