Tubing hanger
AssigneeFMC Corporation
InventorMichael Graham Morgan
Life of this patent
Estimating the term…
Abstract
A tubing hanger is provided with a production bore and an annulus bore spaced radially outwardly of the production bore. The annulus bore is closed by a valve member in the form of an annular disc that is rotatable by a piston provided in the tubing hanger to move between a position in which the aperture in the valve member is aligned with the annulus bore and a position in which spaced parallel upper and lower surfaces of the valve member close the annulus bore.
Claims12
A tubing hanger for a well comprising an annular body having two ends, a central bore extending through said body between said ends and at least one annulus bore extending through said body between said ends and spaced radially outwardly of said central bore, said annulus bore being interrupted by a chamber in which is disposed a valve member having spaced parallel surfaces, an aperture extending between said surfaces and said valve member being movable between an open position in which said aperture is in register with said annulus bore to permit flow through said annulus bore and a closed position in which said aperture is out of register with said annulus bore so that said parallel surfaces close said annulus bore.
Dependencies are inferred from the claim text.