Bore isolation
AssigneeWeatherford/Lamb, Inc.
InventorsAndrew Michael Duggan, Gareth Lyle Innes
Life of this patent
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Abstract
A method of isolating a section of a drilled bore containing a problem zone comprises: providing a section of tubing; locating the tubing in the section of the bore; and expanding the tubing and forming at least an outer portion of the tubing to conform to irregularities in the bore wall, to isolate the problem zone. The tubing may feature a formable outer section, and the expansion of the tubing may be achieved using a compliant rotary expander.
Claims43
A method of isolating a section of a drilled bore, the method comprising the steps of:
- providing a section of tubing;
- locating the tubing in a section of a bore;
- expanding the tubing and to isolate at least a portion of the bore wall.
A method of isolating a section of a drilled bore, the method comprising the steps of:
- providing a section of tubing;
- locating at least a portion of the tubing in an unlined section of a drilled bore;
- expanding the tubing and to isolate at least a portion of the bore wall.
Apparatus for use in isolating a problem zone in a bore, the apparatus comprising a section of expandable tubing and an expansion device, whereby the expansion device is operable to expand the tubing into contact with a section of surrounding bore wall.
Dependencies are inferred from the claim text.