Abstract

A hydraulic lock apparatus, comprising: a lock operator piston arranged to be axially moveable in a piston chamber, the lock operator piston defining a first seal area; a fluid release valve comprising a valve port and a valve member axially moveable within a valve chamber, wherein the fluid release valve is moveable from a sealing arrangement to an open arrangement, wherein the fluid release valve defines a second seal area when in the sealing arrangement; and a hydraulic chamber defined between the first seal area of the lock operator piston and the second seal area of the fluid release valve; wherein the first seal area is larger than the second seal area; and the fluid release valve is configured to be moveable from the sealing arrangement, in which the hydraulic chamber is isolated from the valve port, to the open arrangement, in which the hydraulic chamber is connected to the valve port, in response to a differential pressure cycle being applied to the valve member over the second seal area.

IPC Classes  ?

• E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Abstract

A downhole valve apparatus comprises a housing defining a flow path and a valve member mounted within the flow path and being operable between first and second positions to vary flow along the flow path. A mandrel is mounted within the housing and is moveable in reverse first and second directions to operate the valve member to move between its first and second positions, wherein the mandrel is moveable in the first direction by a first actuator to operate the valve member from its first position towards its second position. A second actuator is operable by a trigger pressure differential between the flow path and a region external to the flow path to move the mandrel in the second direction to operate the valve member from its second position to its first position. The valve apparatus further comprises a primary locking system operable on the second actuator and configurable between a locked configuration in which the second actuator is in a non-active state and an unlocked configuration in which the second actuator is in an active state, wherein the primary locking system is configurable between its locked and unlocked configurations by movement of the mandrel in the first direction.

IPC Classes  ?

• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Abstract

A downhole valve apparatus for closing or restricting flow in a wellbore, the downhole valve apparatus comprising a valve member having an open position and a closed position, the valve member rotatable around a rotation axis of the valve member between the open and closed positions; an interface member comprising a drive recess; and a valve operator cooperable with the interface member to provide rotation of the valve member around the rotation axis between the open and closed positions, the valve operator comprising a valve member engaging portion rotatably mounted with the valve member and a drive recess engaging portion slidably mounted with the drive recess. The drive recess engaging portion and the drive recess comprise complimentary engagable surfaces to provide a robust interface between the interface member and the valve member and prevent stress concentrations occurring between the respective components.

IPC Classes  ?

• E21B 34/12 - Valve arrangements for boreholes or wells in wells operated by movement of casings or tubings

Abstract

A hydraulic lock apparatus, comprising: a lock operator piston arranged to be axially moveable in a piston chamber, the lock operator piston defining a first seal area; a fluid release valve comprising a valve port and a valve member axially moveable within a valve chamber, wherein the fluid release valve is moveable from a sealing arrangement to an open arrangement, wherein the fluid release valve defines a second seal area when in the sealing arrangement; and a hydraulic chamber defined between the first seal area of the lock operator piston and the second seal area of the fluid release valve; wherein the first seal area is larger than the second seal area; and the fluid release valve is configured to be moveable from the sealing arrangement, in which the hydraulic chamber is isolated from the valve port, to the open arrangement, in which the hydraulic chamber is connected to the valve port, in response to a differential pressure cycle being applied to the valve member over the second seal area.

IPC Classes  ?

• E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion

Abstract

A hydraulic lock apparatus, comprising: a lock operator piston arranged to be axially moveable in a piston chamber, the lock operator piston defining a first seal area; a fluid release valve comprising a valve port and a valve member axially moveable within a valve chamber, wherein the fluid release valve is moveable from a sealing arrangement to an open arrangement, wherein the fluid release valve defines a second seal area when in the sealing arrangement; and a hydraulic chamber defined between the first seal area of the lock operator piston and the second seal area of the fluid release valve; wherein the first seal area is larger than the second seal area; and the fluid release valve is configured to be moveable from the sealing arrangement, in which the hydraulic chamber is isolated from the valve port, to the open arrangement, in which the hydraulic chamber is connected to the valve port, in response to a differential pressure cycle being applied to the valve member over the second seal area.

IPC Classes  ?

• E21B 23/04 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion

Abstract

Valve apparatus and methods for controlling flow downhole. Valve apparatus including a valve cartridge axially moveable within a housing, the valve cartridge comprising first and second cartridge portions, the valve cartridge having a first configuration in which the first and second cartridge portions are moveable together and a second configuration in which the first and second cartridge portions are relatively moveable; an internal force element energisable from an initial condition to an activated condition; a valve member mounted within the valve cartridge and rotatable from a closed position to an open position in response to relative movement between the first and second cartridge portions; and an operation arrangement co-operable with the valve cartridge, the housing and the internal force element to energise the internal force element from the initial condition to the activated condition and reconfigure the valve cartridge from the first configuration to the second configuration in response to a trigger event acting on the valve cartridge, the operation arrangement actuable by the internal force element in the activated condition to cause relative movement between the first and second cartridge portions of the valve cartridge in the second configuration and rotation of the valve member from the closed position to the open position.

IPC Classes  ?

• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Abstract

A valve apparatus, such as a downhole valve apparatus, includes a housing having a flow path therein and a valve member mounted within the housing and being operable between closed and open configurations to control flow along the flow path. An actuator assembly is moveable from a first position to a second position to sequentially perform first and second actuation functions, the first actuation function being associated with the operation of an auxiliary system, and the second actuation function opening the valve member from its closed configuration.

IPC Classes  ?

• E21B 34/08 - Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
• F16K 39/06 - Devices for relieving the pressure on the sealing faces for taps or cocks

Abstract

A valve apparatus (30), such as a downhole valve apparatus, comprises a housing (32) having a flow path (34) therein and a valve member (40) mounted within the housing and being operable between closed and open configurations to control flow along the flow path. An actuator assembly (48) is moveable from a first position to a second position to sequentially perform first and second actuation functions, the first actuation function being associated with the operation of a pressure relief arrangement (48), and the second actuation function opening the valve member (40) from its closed configuration.

IPC Classes  ?

• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Abstract

A valve apparatus (30), such as a downhole valve apparatus, comprises a housing (32) having a flow path (34) therein and a valve member (40) mounted within the housing and being operable between closed and open configurations to control flow along the flow path. An actuator assembly (48) is moveable from a first position to a second position to sequentially perform first and second actuation functions, the first actuation function being associated with the operation of a pressure relief arrangement (48), and the second actuation function opening the valve member (40) from its closed configuration.

IPC Classes  ?

• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Abstract

A downhole valve (18) comprises a housing and first and second sleeve assemblies (70 and 76) mounted within the housing (24) and defining an axial pocket (80) therebetween, wherein the first and second sleeve assemblies are arranged to be moved axially relative to each other. A valve member (32) is mounted within the axial pocket and is rotatable about a rotation axis in response to relative axial movement of the first and second sleeve assemblies from a closed position in which fluid flow through the downhole valve is restricted towards an open position in which fluid flow through the downhole valve is increased or permitted. An interface arrangement (94) axially extends from the second sleeve assembly and engages the valve member via an interface mechanism for converting relative axial movement of the first and second sleeve assemblies to rotation of the valve member.

IPC Classes  ?

• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

Abstract

A downhole valve (18) comprises a housing and first and second sleeve assemblies (70 and 76) mounted within the housing (24) and defining an axial pocket (80) therebetween, wherein the first and second sleeve assemblies are arranged to be moved axially relative to each other. A valve member (32) is mounted within the axial pocket and is rotatable about a rotation axis in response to relative axial movement of the first and second sleeve assemblies from a closed position in which fluid flow through the downhole valve is restricted towards an open position in which fluid flow through the downhole valve is increased or permitted. An interface arrangement (94) axially extends from the second sleeve assembly and engages the valve member via an interface mechanism for converting relative axial movement of the first and second sleeve assemblies to rotation of the valve member.

IPC Classes  ?

• E21B 34/00 - Valve arrangements for boreholes or wells
• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools

Abstract

A downhole valve (18) comprises a housing and first and second sleeve assemblies (70 and 76) mounted within the housing (24) and defining an axial pocket (80) therebetween, wherein the first and second sleeve assemblies are arranged to be moved axially relative to each other. A valve member (32) is mounted within the axial pocket and is rotatable about a rotation axis in response to relative axial movement of the first and second sleeve assemblies from a closed position in which fluid flow through the downhole valve is restricted towards an open position in which fluid flow through the downhole valve is increased or permitted. An interface arrangement (94) axially extends from the second sleeve assembly and engages the valve member via an interface mechanism for converting relative axial movement of the first and second sleeve assemblies to rotation of the valve member.

IPC Classes  ?

• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
• E21B 34/00 - Valve arrangements for boreholes or wells
• E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools