Abstract: Methods and devices for utilizing an electrically-actuated wireline insert safety valve (WLSV) and for delivering power to an electrically actuated WLSV via inductive charging and without the use of wired contact.

Abstract: A tubing pressure insensitive actuator system includes a housing having a bore therein; a force transmitter sealingly moveable within the bore the force transmitter defining with the bore two fluid chambers, one at each longitudinal end of the force transmitter; and at least two seals sealingly positioned between the housing and the force transmitter, one of the seals isolating one end of the force transmitter from tubing pressure and another of the seals isolating another end of the force transmitter from tubing pressure and method.

Abstract: A downhole tool actuator includes a shape memory material; a pulley system engaged with the shape memory material and fixed in position; and a downhole tool component operatively connected to the shape memory material and moveable in response to a phase change of the shape memory material from a martensitic phase to an austenitic phase and method.

Abstract: A chemical injection system includes a TRSV; a communication nipple in operable communication with the TRSV and positioned relative to the TRSV to be downhole of a flapper closure mechanism thereof when installed in a wellbore; a chemical injection line in fluid communication with the communication nipple; and a capillary sleeve receivable at the communication nipple and configured to sealingly convey fluid from the communication nipple to a remote location without affecting operation of the TRSV and method.

Abstract: Piston bore distortions in a sub-surface safety valve are reduced or eliminated when valve body is subjected to high working pressures. In one embodiment, a piston is disposed in a sleeve that is disposed in a piston bore. The bore can distort but the sleeve within will not distort to the point of losing sealing pressure around the piston. In another approach additional bore or bores are provided adjacent the piston bore to make the pin end of the connection for the valve housing more uniform in the region of the piston bore so that pressure loading does not result in sufficient distortion of the piston bore to lose the piston sealing relation in its bore.

Abstract: An equalizing valve for a flapper in a subsurface safety valve has a valve member disposed in a passage in the flapper that is made of a material that changes shape when subjected to a stimulus such as heat, for example. In one configuration, the valve member closes off the passage and in another flow past or through the valve member defines the open position allowing pressure to equalize across the closed flapper. Other valve applications are envisioned for downhole use. The stimulus can come from applied electrical current that causes sufficient heating to have the valve member alter its shape. Mechanical assists to the shape altering can be provided which can also optionally be made of shape changing materials. Biasing into a sealed position is envisioned.

Abstract: Piston bore distortions in a sub-surface safety valve are reduced or eliminated when valve body is subjected to high working pressures. In one embodiment, a piston is disposed in a sleeve that is disposed in a piston bore. The bore can distort but the sleeve within will not distort to the point of losing sealing pressure around the piston. In another approach additional bore or bores are provided adjacent the piston bore to make the pin end of the connection for the valve housing more uniform in the region of the piston bore so that pressure loading does not result in sufficient distortion of the piston bore to lose the piston sealing relation in its bore.