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US 7,451,828 B2Granted
Downhole pressure containment system
AssigneeBaker Hughes Incorporated
InventorRoger J. Marsh
Life of this patent
Estimating the term…
Abstract
An isolation system employing a containment zone within the casing or tubing of a wellbore. The containment zone can be isolated from the wellbore pressure and leak tested to ensure no leakage is occurring across the zone. The isolation system prevents wellbore pressure below the system from communicating with the surface, thereby allowing for safe egress of tools from within the wellbore.
Claims11
An isolation system within a wellbore comprising:
- a containment zone formed within the wellbore;
- an upper isolation valve adjacent the containment zone;
- a lower isolation valve adjacent the containment zone;
- a pressure source in communication with said containment zone;
- a leak monitor in communication with said containment zone;
- and
- a downhole tool trap.
4 more elements
A method of verifying the integrity of a barrier system within a wellbore comprising:
- (a) forming a containment zone within the wellbore, wherein said containment zone is disposed within a barrier system comprising a first barrier and a second barrier;
- (b) sealing the first and second barrier;
- (c) pressurizing the containment zone to a set pressure;
- and
- (d) monitoring the containment zone for a leak.
2 more elements
Dependencies are inferred from the claim text.