Abstract: A sealing assembly for a downhole device has first (12) and second sealing (22) components which are urged together to make up the assembly such that a first sealing surface (34) on the first component radially presses a lip member (44) on the second component to change the angle of a second sealing surface (45) in the connected assembly. The components are urged together by a driving member (60) which can have screw threads that cooperate with the first component. The lip may be annular and may be formed by an undercut or recess (42) radially inwardly or outwardly of the lip member, allowing the lip member to bend radially inwards into the recess, during insertion of the second sealing component into the first.

Abstract: A housing for a downhole tool, having a fluid vent assembly comprising a port passing through the wall of the housing to transmit fluid through the port when the port is open, a sealing device to seal the port, and a cutting device to disrupt the sealing device and permit transmission of fluid through the port. The cutting device is driven axially through the sealing device without relative rotation between the two. The cutting device has an asymmetric blade to cut a coupon from the sealing device by a gradual and progressive disruption of the closure, typically cutting through only a portion the closure device, so that the coupon cut from the closure device remains attached to the closure device when the closure device is ruptured to open the seal. Typically the downhole tool comprises a downhole pump, and the housing comprises the shroud of the pump.

Abstract: A sealing assembly for a downhole device has first (12) and second sealing (22) components which are urged together to make up the assembly such that a first sealing surface (34) on the first component radially presses a lip member (44) on the second component to change the angle of a second sealing surface (45) in the connected assembly. The components are urged together by a driving member (60) which can have screw threads that cooperate with the first component. The lip may be annular and may be formed by an undercut or recess (42) radially inwardly or outwardly of the lip member, allowing the lip member to bend radially inwards into the recess, during insertion of the second sealing component into the first.

Abstract: A housing for a downhole tool, having a fluid vent assembly comprising a port passing through the wall of the housing to transmit fluid through the port when the port is open, a sealing device to seal the port, and a cutting device to disrupt the sealing device and permit transmission of fluid through the port. The cutting device is driven axially through the sealing device without relative rotation between the two. The cutting device has an asymmetric blade to cut a coupon from the sealing device by a gradual and progressive disruption of the closure, typically cutting through only a portion the closure device, so that the coupon cut from the closure device remains attached to the closure device when the closure device is ruptured to open the seal. Typically the downhole tool comprises a downhole pump, and the housing comprises the shroud of the pump.

Abstract: A wet-mateable connector for making a connection underwater comprises a male component 10 having a male pin 14 and a female component 20 having a female socket 24 for receiving the male pin. The male component has a male wiper seal assembly 16 which moves between a decoupled and a coupled position during coupling of the male component 10 and female component 20 so as to wipe at least a portion of the male pin 14. A latch 42a, 48 is provided which is arranged to latch the male wiper seal assembly 16 to the female component 20 during coupling such that when the male and female components are decoupled, the male wiper seal assembly 16 is returned to the decoupled position.

Abstract: A wet-mateable connector for making a connection underwater comprises a male component 10 having a male pin 14 and a female component 20 having a female socket 24 for receiving the male pin. A fluid chamber 34 containing dielectric fluid and a water ingress treatment module 36 for removing water from the dielectric fluid are provided. The male and female components 10, 20 are arranged to be mechanically coupled together such that the female socket 24 receives the male pin 14, thereby making the connection.

Abstract: A switch mechanism is provided for inclusion in a downhole production string located in a wellbore. The switch mechanism includes an electrical power input and at least two electrical power outputs. In addition, the switch mechanism includes an actuator mechanism which is capable of being actuated from a position remote from the wellbore to selectively move between at least two positions. The movement thereby provides a selective electrical connection between the input and one of the outputs when the actuator is in one of the at least two positions.

Abstract: There is disclosed a connector, such as a wet-mateable connector, comprising first and second components having first and second contacts respectively and arranged to be coupled together such that the first and second contacts make a connection. The connector comprises a shuttle associated with the first component and moveable between at least a decoupled position in which the shuttle protects the first contact and a coupled position in which the first contact is exposed. During coupling of the first and second components the shuttle is moved to the coupled position so as to expose the first contact such that it can make an electrical connection with the second contact. The connector also comprises a latch arranged to latch the second component to the shuttle such that upon decoupling of the first and second components, the shuttle is returned to the decoupled position.

Abstract: A wet-mateable connector for making a connection underwater comprises a male component 10 having a male pin 14 and a female component 20 having a female socket 24 for receiving the male pin. The male component has a male wiper seal assembly 16 which moves between a decoupled and a coupled position during coupling of the male component 10 and female component 20 so as to wipe at least a portion of the male pin 14. A latch 42a, 48 is provided which is arranged to latch the male wiper seal assembly 16 to the female component 20 during coupling such that when the male and female components are decoupled, the male wiper seal assembly 16 is returned to the decoupled position.

Abstract: There is disclosed a connector, such as a wet-mateable connector, comprising first and second components having first and second contacts respectively and arranged to be coupled together such that the first and second contacts make a connection. The connector comprises a shuttle associated with the first component and moveable between at least a decoupled position in which the shuttle protects the first contact and a coupled position in which the first contact is exposed. During coupling of the first and second components the shuttle is moved to the coupled position so as to expose the first contact such that it can make an electrical connection with the second contact. The connector also comprises a latch arranged to latch the second component to the shuttle such that upon decoupling of the first and second components, the shuttle is returned to the decoupled position.

Abstract: A wet-mateable connector for making a connection underwater comprises a male component 10 having a male pin 14 and a female component 20 having a female socket 24 for receiving the male pin. A fluid chamber 34 containing dielectric fluid and a water ingress treatment module 36 for removing water from the dielectric fluid are provided. The male and female components 10, 20 are arranged to be mechanically coupled together such that the female socket 24 receives the male pin 14, thereby making the connection.

Abstract: An apparatus and a method for selectively controlling fluid flow. The apparatus includes a body member having a throughbore formed therein. The apparatus also includes at least one bypass port formed in the body member and a rotatable member arranged for insertion and rotation within the throughbore of the body member. The rotatable member in the throughbore creates first and second annular portions. The apparatus further comprises a moveable member, wherein the moveable member is moveable between a first configuration which defines a first fluid flow path between the first and second annular portions and a second configuration which defines a second fluid flow path between the first annular portion and the at least one bypass port. The moveable member is typically moveable between the first and second configurations in response to fluid flow along the first fluid flow path.

Abstract: A wet-mateable connector for making a connection underwater comprises a male component 10 having a male pin 14 and a female component 20 having a female socket 24 for receiving the male pin. The male component has a male wiper seal assembly 16 which moves between a decoupled and a coupled position during coupling of the male component 10 and female component 20 so as to wipe at least a portion of the male pin 14. A latch 42a, 48 is provided which is arranged to latch the male wiper seal assembly 16 to the female component 20 during coupling such that when the male and female components are decoupled, the male wiper seal assembly 16 is returned to the decoupled position.