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US 2010/0163253 A1Published application
Dual isolation mechanism of cementation port
AssigneeWeatherford/Lamb, Inc.
InventorsRebecca M. Caldwell, Christopher J. Cuffe
Life of this patent
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Abstract
An apparatus for providing fluid communication includes a housing having a port; an inner sleeve adapted to seal the port; and a seal sleeve adapted to seal the port, wherein the seal sleeve is disposed between the inner sleeve and the housing and is movable with the inner sleeve to seal the port. In another embodiment, the port is sealed using a metal to metal seal.
Claims23
An apparatus for providing fluid communication, comprising:
- a housing having a port;
- an inner sleeve adapted to seal the port;
- and
- a seal sleeve adapted to seal the port, wherein the seal sleeve is disposed between the inner sleeve and the housing and is movable with the inner sleeve to seal the port.
1 more element
A method of controlling fluid communication through a port of a ported tool, comprising:
- providing one or more sealing members adjacent to each side of the port;
- moving an inner sleeve to open the port;
- supplying fluid through the port;
- engaging the inner sleeve to a seal sleeve;
- and
- moving the seal sleeve to engage the one or more sealing members on each side of the port, thereby closing off the port.
3 more elements
A method of cementing a wellbore, comprising:
- positioning a casing string in the wellbore, wherein the casing string includes a ported tool having a port;
- supplying cement through the bottom of the casing string;
- opening the port by moving an inner sleeve;
- supplying more cement through the port;
- and
- moving the inner sleeve and a seal sleeve across the port to close the port.
3 more elements
Dependencies are inferred from the claim text.