Wellhead-side-outlet contingency valve removal plug adaptor assembly
AssigneeSaudi Arabian Oil Company
InventorsMansour Abdullah Alamer, Mohammed Eid Almukhlifi
Life of this patent
Estimating the term…
Abstract
A side-outlet adaptor assembly for repairing a side-outlet of a wellhead spool is disclosed. The side-outlet adaptor assembly includes an isolation sleeve having a first portion adapted to be received by the side-outlet and a second portion adapted to be received by an adaptor, the adaptor having a wellhead-side opening adapted to receive the isolation sleeve and a gate-valve-side (GV-side) opening adapted to receive a valve replacement (VR) plug, and a test port arranged on the adaptor for performing a pressure test of the side-outlet.
Claims15
A side-outlet adaptor assembly for repairing a side-outlet of a wellhead spool, comprising:
- an isolation sleeve having a first portion adapted to be received by the side-outlet and a second portion adapted to be received by an adaptor;
- the adaptor having a wellhead-side opening adapted to receive the isolation sleeve and a gate-valve-side (GV-side) opening adapted to receive a valve replacement (VR) plug;
- and
- a test port arranged on the adaptor for performing a pressure test of the side-outlet,
- wherein the side-outlet and the VR plug are on opposite sides of the adaptor when the isolation sleeve is installed to repair the side-outlet.
A wellhead of a well, comprising:
- a wellhead spool comprising a side-outlet that is damaged;
- and
- a side-outlet adaptor assembly for repairing the side-outlet, comprising:
- an isolation sleeve having a first portion adapted to be received by the side-outlet and a second portion adapted to be received by an adaptor;
- the adaptor having a wellhead-side opening adapted to receive the isolation sleeve and a gate-valve-side (GV-side) opening adapted to receive a valve replacement (VR) plug;
- and
- a test port arranged on the adaptor for performing a pressure test of the side-outlet,
- wherein the side-outlet and the VR plug are on opposite sides of the adaptor when the isolation sleeve is installed to repair the side-outlet.
A method for repairing a side-outlet of a wellhead, comprising:
- identifying a damaged valve removal (VR) plug profile on the side-outlet of the wellhead;
- inserting an isolation sleeve of a side-outlet adaptor assembly into the damaged VR plug profile;
- installing a ring gasket on a ring groove surrounding the side-outlet;
- installing an adaptor of the side-outlet adaptor assembly using the isolation sleeve and the ring gasket;
- inserting a VR plug onto a VR plug profile of the adaptor;
- and
- confirming air/gas tightness of the side-outlet by applying pressure through a test port of the adaptor to detect any air/gas leakage from an annulus to outside of the wellhead,
- wherein the damaged VR plug profile is substituted by the VR plug profile of the adaptor,
- wherein the side-outlet and the VR plug are on opposite sides of the adaptor when the isolation sleeve is installed to repair the side-outlet.
Dependencies are inferred from the claim text.