Title:
MULTIPLE STAGE CEMENTING TOOL WITH EXPANDABLE SEALING ELEMENT
Document Type and Number:
WIPO Patent Application WO/2011/110808
Kind Code:
A3
Abstract:
A cementing tool for cementing a casing in a well has an inner mandrel that defines a central flow passage and has at least one fluid port defined through a wall thereof. An outer mandrel is disposed about the inner mandrel and the inner and outer mandrels define an annular space therebetween. The outer mandrel has at least one sealing element affixed thereto. An opening sleeve is positioned in the inner mandrel and is movable from a closed position to an open position in which the fluid port is uncovered. An expansion cone is positioned in the annular space. Fluid pressure applied through the central flow passage, and the fluid port will pass into the annular space and will urge the expansion cone through the annular space which will plastically deform the outer mandrel so that sealing elements affixed to the outer mandrel engage a previously installed casing in the well to seal thereagainst.
Inventors:
ROGERS HENRY E (US)
HOLDEN STEVEN L (US)
JACKSON TANCE J (US)
HOLDEN STEVEN L (US)
JACKSON TANCE J (US)
Application Number:
PCT/GB2011/000328
Publication Date:
July 12, 2012
Filing Date:
March 08, 2011
Export Citation:
Assignee:
HALLIBURTON ENERGY SERV INC (US)
ROGERS HENRY E (US)
HOLDEN STEVEN L (US)
JACKSON TANCE J (US)
CURTIS PHILIP ANTHONY (GB)
ROGERS HENRY E (US)
HOLDEN STEVEN L (US)
JACKSON TANCE J (US)
CURTIS PHILIP ANTHONY (GB)
International Classes:
E21B33/14; E21B34/14
Domestic Patent References:
| WO2000037772A1 | 2000-06-29 |
Foreign References:
| US20040031610A1 | 2004-02-19 | |||
| US20100051276A1 | 2010-03-04 |
Attorney, Agent or Firm:
CURTIS, Philip, Anthony et al. (235 High Holborn, London WC1V 7LE, GB)
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