Patent ID: 11965394
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E  F

Claim 20:
21. A valve assembly for controlling fluid communication along a wellbore tubular, the valve assembly comprising:
a ball having a fluid passage and rotationally coupled to a ball support, wherein the ball is configured to be in an open position, a shear position, or a closed position;
a main piston sealingly coupled to an activation chamber configured to contain a gas charge;
a control piston sealingly coupled to a control chamber and configured to axially translate the ball support to move the ball to the open position, in response to a volume of fluid being delivered through a conduit;
one or more push rods sealingly coupled to a corresponding rod port within the main piston, wherein the one or more push rods are configured to bias the ball support to move the ball to the closed position via the gas charge; and
one or more ball seals configured to sealingly engage an outer surface of the ball, and isolate a first wellbore environment above the ball from a second wellbore environment below the ball when the ball is in the closed position,
wherein the ball support is configured to linearly translate to contact the main piston,
wherein the ball is further configured to move to the open position by the ball support axially translating and in response to a fluid pressure within the control chamber overcoming a bias of the gas charge within the activation chamber,
wherein the main piston is configured to axially translate into the activation chamber in response to the axial transition of the ball support,
wherein a volume within the activation chamber is decreased and a pressure of a compressible gas in the activation chamber is increased in response to the axial translation of the main piston into the activation chamber,
wherein the fluid passage of the ball aligns with a tool passage within the valve assembly when the ball is in the open position,
wherein the ball is further configured to move to the shear position in response to the ball support axially translating, and
wherein the main piston is configured to contact a limit shoulder when the ball is in the shear position and in response to a reduction in fluid volume within the control chamber.