# US 2019/0376366 A1 · Tubing pressure insensitive failsafe wireline retrievable safety valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376366 A1 - Document ID: US20190376366A1 - Status: Published application - Kind: A1 - Application number: 16/431,373 - Filed: 2019-06-04 - Published: 2019-12-12 - Earliest claimed: 2018-06-06 - Assignees: Baker Hughes, A Ge Company, LLC - Inventors: John Burris; Jason Edwards; Wade Miller; Ronald J. Garr - Web page: https://patentgrep.com/patent/US20190376366A1 ## CPC - E21B 34/063: {Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence)} - E21B 34/105: {retrievable, e.g. wire line retrievable, i.e. with an element which can be landed into a landing-nipple provided with a passage for control fluid} - E21B 34/10: operated by control fluid supplied from outside the borehole - E21B 34/14: operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools {(E21B34/066 takes precedence)} - E21B 2200/05: Flapper valves - E21B 2200/08: Down-hole devices using materials which decompose under well-bore conditions - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A tubing pressure insensitive failsafe wireline retrievable safety valve, borehole system having the valve and method of operation of the valve. The valve includes a tool housing, a flow tube disposed within the tool housing, an actuation piston disposed in the tool housing and operably connected to the flow tube, the actuation piston having an actuation side and a pressure side, and a fluid pathway between a potential leak site for the valve and the pressure side of the piston. A temporary sealing member is in the fluid pathway between the potential leak site and the pressure side of the piston. The method includes disposing the valve at a selected location and removing at least a portion of the temporary sealing member from the fluid pathway after landing the wireline retrievable safety valve at the selected location. ## Claims ### Claim 1 A tubing pressure insensitive failsafe wireline retrievable safety valve, comprising: a tool housing; a flow tube disposed within the tool housing; an actuation piston disposed in the tool housing and operably connected to the flow tube, the actuation piston having an actuation side and a pressure side; and a fluid pathway between a potential leak site for the valve and the pressure side of the piston. ### Claim 2 (depends on 1) The valve as claimed in claim 1 further comprising a temporary sealing component disposed in the fluid pathway between the potential leak site and the pressure side of the actuation piston. ### Claim 3 (depends on 2) The valve as claimed in claim 2 wherein the temporary sealing component includes a piston and seal positioned to exit a bore in which the seal is disposed. ### Claim 4 (depends on 2) The valve of claim 2 wherein the temporary sealing component is permanently disabled after the valve is set downhole. ### Claim 5 (depends on 2) The valve of claim 2 wherein at least a portion of the temporary sealing component dissolves due to fluid exposure. ### Claim 6 (depends on 5) The valve of claim 5 wherein the temporary sealing member dissolves via a chemical reaction with a reactive environment contained within the fluid pathway. ### Claim 7 (depends on 5) The valve of claim 5 wherein the at least one portion is made of a powder metal compact. ### Claim 8 (depends on 5) The valve of claim 5 wherein the fluid pathway is filled with a chemically reactive fluid prior to running the valve downhole. ### Claim 9 (depends on 2) The valve of claim 2 wherein the temporary sealing component is removed from the fluid pathway after the valve is landed in its operable location downhole. ### Claim 10 (depends on 2) The valve of claim 2, wherein the temporary sealing component comprising a material that is solid below a specified temperature of the valve and is liquid at or above the specified temperature. ### Claim 11 (depends on 1) The valve of claim 1 further comprising a pressure chamber at the pressure side of the actuation piston. ### Claim 12 (depends on 2) The valve of claim 2, further comprising a pressure chamber at the pressure side of the actuation piston, wherein the temporary sealing component is configured to vent to the pressure chamber upon a selected pressure from the potential leak site. ### Claim 13 (depends on 11) The valve of claim 11 wherein the pressure chamber is partially defined by a seal between the housing and the flow tube. ### Claim 14 (depends on 3) The valve of claim 3 wherein the flow tube includes an end defining a space between the flow tube and a flapper, the space dimensioned to ensure that the an actuation pressure at an actuation side of the actuation piston communicates a fluid pressure therein to the pressure chamber prior to the flow tube contacting the flapper. ### Claim 15 (depends on 1) The valve of claim 1 wherein the flow tube and the housing are releasably connected together by a release member. ### Claim 16 (depends on 1) The valve of claim 1, wherein the fluid pathway is in fluid communication with a balance line in order to supply a balance pressure to the pressure side of the actuation piston. ### Claim 17 The valve as claimed in 16 wherein the balance line extends through a tubular string to the valve. ### Claim 18 (depends on 1) The valve of claim 1, further comprising a running tool configured to hold the flow tube in a closed position while running downhole. ### Claim 19 (depends on 1) The valve of claim 1, further comprising an annular hydraulic control chamber disposed between potential leak sites. ### Claim 20 (depends on 1) The valve of claim 1, further comprising a pressure communication system including a first tubular threadingly connected to a second tubular and a communication pathway that passes from within a wall of the first tubular to within a wall of the second tubular across a joint. ### Claim 21 (depends on 20) The valve of claim 20, wherein the pressure communication system partially defines the fluid pathway between a potential leak site for the valve and the pressure side of the actuation piston. ### Claim 22 A borehole system having a tubing pressure insensitive failsafe wireline retrievable safety valve, comprising: a tool housing; a flow tube disposed within the tool housing; an actuation piston disposed in the tool housing and operably connected to the flow tube, the actuation piston having an actuation side and a pressure side; and a fluid pathway between a potential leak site for the valve and the pressure side of the piston. ### Claim 23 A method of operating a tubing pressure insensitive failsafe wireline retrievable safety valve, comprising: disposing the valve at a selected location, the valve comprising: a tool housing; a flow tube disposed within the tool housing; an actuation piston disposed in the tool housing and operably connected to the flow tube, the actuation piston having an actuation side and a pressure side; a fluid pathway between a potential leak site for the valve and the pressure side of the piston; and a temporary sealing member in the fluid pathway between the potential leak site and the pressure side of the piston; and removing at least a portion of the temporary sealing member from the fluid pathway after landing the wireline retrievable safety valve at the selected location. ### Claim 24 (depends on 23) The method of claim 23, wherein the temporary sealing member includes a dissolvable member and removing at least the portion of the temporary sealing member further comprising dissolving the dissolvable member. ### Claim 25 (depends on 23) The method of claim 23, wherein the removing at least a portion of the temporary sealing member allows fluid communication between the fluid pathway and the pressure side of the piston. ### Claim 26 (depends on 23) The method of claim 23, wherein the removing at least a portion of the temporary sealing member exposes the pressure side of the piston to a pressure in a balance line. ### Claim 27 (depends on 23) The method of claim 23, wherein the temporary sealing component comprising a material that is solid below a selected temperature and is liquid at or above the selected temperature, further comprising raising the temperature of the material above the selected temperature.