Confirm to permanently remove your answer!
The lubricator valve for the subsea test tree is a surface-operated hydraulic valve that is run from one or two joints below the flowhead. It enables the top of the string to be used as a lubricator during wireline, slick-line, or coiled tubing intervention operations, thereby reducing the amount of lubricator sections needed above the flowhead.
The lubricator valve is connected by a two- or three-line hose bundle to a surface-operating console. The third line may be used for injection of a hydrate inhibitor, such as glycol or methanol, just below the valve. In event of control line pressure failure, the valve will remain in the last position, open or closed, that it was placed in before the pressure loss occurred.
The lubricator valve is a pump-through valve and can be pressure tested from above (with hydraulic pressure maintained in the close line). When it is closed, the lubricator valve seals from either above or below to
Benefits of Lubricator Valve
Applications of Lubricator Valve
Other Features of Lubricator Valve
OverviewThis testing guidance is designed to aid in developing test procedures for a specific project by describing the steps involved …
The methods described below apply to valves designed to isolate equipment, such as chillers, boilers, and cooling towers, from the …
Single or double valves at a classification change should be suitable for the more severe line classification on either side …