Valve system for use in a wellbore
AssigneeInterwell Norway AS
InventorRylan Paul D'Souza
Life of this patent
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Abstract
A valve system for use in a wellbore, the valve system comprising a side pocket mandrel having a main bore for alignment with a tubular in the wellbore, a laterally offset side pocket bore which is enclosed by a side pocket wall, and first and second ports which each extend through the side pocket wall into the side pocket bore, the valve system further comprising first valve assembly which is operable to control flow of fluid from the exterior of the side pocket bore to the first port, and a second valve assembly which is located in the side pocket bore to close the second port and which is operable to control flow of fluid from the first port to the main bore of the side pocket mandrel.
Claims10
A valve system for use in a wellbore, the valve system comprising a side pocket mandrel having a main bore for alignment with a tubular in the wellbore, a laterally offset side pocket bore which is enclosed by a side pocket wall, and first and second ports which each extend through the side pocket wall into the side pocket bore, the valve system further comprising first valve assembly which is configured to control flow of fluid from the exterior of the side pocket bore into the side pocket bore via the first port, and a second valve assembly which is located in the side pocket bore and which is operable to control flow of fluid from exterior of the side pocket mandrel to the main bore of the side pocket mandrel via the second port.
A method of operating a valve system comprising a side pocket mandrel having a main bore for alignment with a tubular in the wellbore, a laterally offset side pocket bore which is enclosed by a side pocket wall, and first and second ports which each extend through the side pocket wall into the side pocket bore, the valve system further comprising first valve assembly which is configured to control flow of fluid from the exterior of the side pocket bore into the side pocket bore via the first port, and a second valve assembly which is located in the side pocket bore to close the second port and which is operable to control flow of fluid from the side pocket bore to the main bore of the side pocket mandrel, wherein the method comprises removing the second valve assembly from the side pocket bore and placing a replacement second valve assembly in the side pocket bore, the replacement second valve assembly being operable to control flow of fluid from the exterior of the side pocket mandrel to the main bore of the side pocket mandrel via the second port.
Dependencies are inferred from the claim text.