US3910352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-tubing safety valve well tool
Assignee: Hydril LLC
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Filing: 1974-09-09
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Granted: 1975-10-07
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Expires: 1994-09-09
Abstract
Abstract A safety valve well tool movable to a subsurface location through a bore of a production tubing for securing therewith in response to a predetermined fluid pressure for thereafter controlling undesired upwardly flow through the bore of the production tubing with a rotatable ball valve operating in response to a control fluid pressure communicated to the well tool through an annular passageway.
Inventors
- 👤 James D Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:51
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B34/00; E21B34/06; E21B34/10; E21B2200/00; E21B2200/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
374 words
A well tool for controlling flow of well fluids through the bore of a first production tubing at a desired subsurface location in a well, including: a first production tubing extending downwardly from the earth surface in a well; a tubular housing movable through the bore of the first production tubing to and from the desired subsurface location and having a flow passage extending therethrough for enabling communication of well fluids and the like in the bore of the first well tubing past said tubular housing; bore closure means mounted with said housing and movable to and from an open position for enabling flow of fluid through said flow passage and a closed position for substantially blocking flow of fluid through said flow passage; a second production tubing sealingly connected with said tubular housing and having a bore disposed in flow communication with said flow passage and extending upwaRdly from said tubular housing within the bore of the first production tubing for forming a flow passage for well fluids from said tubular housing to the earth surface separate from the bore of the first production tubing, said second production tubing spaced from said first production tubing; means for releasably securing said tubular housing with the first well tubing at a desired subsurface location, said means for releasably securing actuated by increasing fluid pressure in the bore of the second production tubing and said flow passage; means for releasably sealing said tubular housing with the first production tubing to direct the flow of well fluids from the bore of the first production tubing below said tubular housing into said flow passage, said means for sealing actuated by said means for releasably securing to effect sealing when said tubular housing is secured with the first production tubing; and actuator means mounted with said housing for effecting movement of said bore closure means to and from the open and closed positions in response to a control fluid pressure communicated to said actuator means from the bore of the first production tubing through a port in said housing located above said means for sealing and separately from the well fluids in the bore of the second production tubing wherein said well tool is operably installed in a well.
Claim 2
Dependent Claim
374 words
A well tool for controlling flow of well fluids through the bore of a first production tubing at a desired subsurface location in a well, including: a first production tubing extending downwardly from the earth surface in a well; a tubular housing movable through the bore of the first production tubing to and from the desired subsurface location and having a flow passage extending therethrough for enabling communication of well fluids and the like in the bore of the first well tubing past said tubular housing; bore closure means mounted with said housing and movable to and from an open position for enabling flow of fluid through said flow passage and a closed position for substantially blocking flow of fluid through said flow passage; a second production tubing sealingly connected with said tubular housing and having a bore disposed in flow communication with said flow passage and extending upwaRdly from said tubular housing within the bore of the first production tubing for forming a flow passage for well fluids from said tubular housing to the earth surface separate from the bore of the first production tubing, said second production tubing spaced from said first production tubing; means for releasably securing said tubular housing with the first well tubing at a desired subsurface location, said means for releasably securing actuated by increasing fluid pressure in the bore of the second production tubing and said flow passage; means for releasably sealing said tubular housing with the first production tubing to direct the flow of well fluids from the bore of the first production tubing below said tubular housing into said flow passage, said means for sealing actuated by said means for releasably securing to effect sealing when said tubular housing is secured with the first production tubing; and actuator means mounted with said housing for effecting movement of said bore closure means to and from the open and closed positions in response to a control fluid pressure communicated to said actuator means from the bore of the first production tubing through a port in said housing located above said means for sealing and separately from the well fluids in the bore of the second production tubing wherein said well tool is operably installed in a well.
Claim 3
Dependent Claim
299 words
A well tool for controlling flow of well fluids through the bore of a well tubing, including: a well casing extending downwardly from the earth surface in a well and secured in the well; a first production tubing extending downwardly from the earth surface within a bore of the well casing; a well packer disposed adjacent the lower end of of the first production tubing for effecting a seal between the well casing and the first production tubing; a tubular housing movable through a bore of the first production tubing to and from a subsurface location and having a flow passage extending therethrough for enabling communication of well fluids and the like in the bore of the first production tubing past said housing; a second production tubing having a lower end sealingly secured with said tubular housing with said second production tubing movable through the bore of the first production tubing with said tubular housing, said second production tubing having a bore disposed in flow communication with said flow passage and extending upwardly from said tubular housing for forming a conduit for well fluids from said tubular housing separate from the bore of the first production tubing; bore closure means mounted with said housing and movable to and from an open position for enabling flow of fluid through said flow passage and a closed position for substantially blocking flow of fluid through said flow passage; means mounted with said housing for effecting movement of said bore closure means to and from the open and closed position; and means mounted with said housing for releasably securing said housing with said first production tubing at a subsurface location in response to a controlled application of fluid pressure in said flow passage wherein said well tool is operably positioned in a well.
Claim 4
Dependent Claim
299 words
A well tool for controlling flow of well fluids through the bore of a well tubing, including: a well casing extending downwardly from the earth surface in a well and secured in the well; a first production tubing extending downwardly from the earth surface within a bore of the well casing; a well packer disposed adjacent the lower end of of the first production tubing for effecting a seal between the well casing and the first production tubing; a tubular housing movable through a bore of the first production tubing to and from a subsurface location and having a flow passage extending therethrough for enabling communication of well fluids and the like in the bore of the first production tubing past said housing; a second production tubing having a lower end sealingly secured with said tubular housing with said second production tubing movable through the bore of the first production tubing with said tubular housing, said second production tubing having a bore disposed in flow communication with said flow passage and extending upwardly from said tubular housing for forming a conduit for well fluids from said tubular housing separate from the bore of the first production tubing; bore closure means mounted with said housing and movable to and from an open position for enabling flow of fluid through said flow passage and a closed position for substantially blocking flow of fluid through said flow passage; means mounted with said housing for effecting movement of said bore closure means to and from the open and closed position; and means mounted with said housing for releasably securing said housing with said first production tubing at a subsurface location in response to a controlled application of fluid pressure in said flow passage wherein said well tool is operably positioned in a well.
Claim 5
Dependent Claim
330 words
A well tool apparatus for controlling flow of well fluids through a first production tubing at a desired subsurface location in a well, including: a tubular housing movable through a bore of the first production tubing to and from the desired subsurface location in a well and having a flow passage extending through said tubular housing for enabling communication of well fluids and the like in the bore of the first production tubing below said housing with a location above said tubular housing, said tubular housing having means for connecting and sealing said tubular housing with a second production tubing disposed within the bore of the first production tubing above said tubular housing for communicating said flow passage with the bore of the second production tubing anD for supporting said tubular housing with the second production tubing when said tubular housing moves to and from the desired subsurface location by movement of the second production tubing within the bore of the first production tubing; seal means mounted with said housing and actuatable for blocking passage of fluids between said tubular housing and the first production tubing to direct the flow of well fluids through said flow passage of said housing; bore closure means mounted with said housing and movable to and from an open position for enabling flow of fluid through said flow passage a closed position for substantially blocking flow of fluid through said flow passage; actuator means mounted with said housing for effecting controlled movement of said bore closure means to and from the open and closed position in response to a control fluid pressure communicated to said tubular housing through the bore of the first production tubing; and means with said housing for releasably securing said housing with the first production tubing at the desired subsurface location, said means for releasably securing actuated by the application of fluid pressure in a predetermined manner in said flow passage wherein said well tool is operably positioned in a well.
Claim 6
Dependent Claim
330 words
A well tool apparatus for controlling flow of well fluids through a first production tubing at a desired subsurface location in a well, including: a tubular housing movable through a bore of the first production tubing to and from the desired subsurface location in a well and having a flow passage extending through said tubular housing for enabling communication of well fluids and the like in the bore of the first production tubing below said housing with a location above said tubular housing, said tubular housing having means for connecting and sealing said tubular housing with a second production tubing disposed within the bore of the first production tubing above said tubular housing for communicating said flow passage with the bore of the second production tubing anD for supporting said tubular housing with the second production tubing when said tubular housing moves to and from the desired subsurface location by movement of the second production tubing within the bore of the first production tubing; seal means mounted with said housing and actuatable for blocking passage of fluids between said tubular housing and the first production tubing to direct the flow of well fluids through said flow passage of said housing; bore closure means mounted with said housing and movable to and from an open position for enabling flow of fluid through said flow passage a closed position for substantially blocking flow of fluid through said flow passage; actuator means mounted with said housing for effecting controlled movement of said bore closure means to and from the open and closed position in response to a control fluid pressure communicated to said tubular housing through the bore of the first production tubing; and means with said housing for releasably securing said housing with the first production tubing at the desired subsurface location, said means for releasably securing actuated by the application of fluid pressure in a predetermined manner in said flow passage wherein said well tool is operably positioned in a well.
Claim 7
Dependent Claim
93 words
The well tool apparatus as set forth in claim 3, including: said bore closure means including a ball-type valve member having a flow port formed therethrough and disposed in said flow passage for rotational movement to and from the open position with said flow port aligned with said flow passage to enable flow of fluid through said flow port and said flow passage and the closed position where said ball-type member blocks flow through said flow passage wherein rotation of said ball controls flow of fluid in the bore of the production tubing.
Claim 8
Dependent Claim
33 words
The well tool apparatus as set forth in claim 3, wherein: said seal means when actuated expands radially outwardly for effecting an annular seal between said tubular housing and the first production tubing.
Claim 9
Dependent Claim
119 words
The well tool apparatus as set forth in claim 3, wherein said means for releasably securing includes: a slip means mounted with said tubular housing and movable to and from a free position enabling said housing to move through the bore of the first production tubing and a locked position engaging the first production tubing for blocking movement of said housing relative to the first production tubing; and wedge means mounted with said tubular housing and movable in response to the urging of a predetermined pressure from a first position to a second position for effecting movement of said slip means from the free position to the locked position wherein said housing is secured with the first production tubing.
Claim 10
Independent Claim
161 words
A method of installing a controlled safety valve well tool at a desired subsurface location in a well having a first well tubing extending downwardly from the ground surface for flowing well fluids to the surface through the bore of the first well tubing, including the steps of: connecting a safety valve well tool with a second well tubing; moving the safety valve to a desired subsurface location in the well through the bore of the first well tubing by moving the second well tubing into the bore of the first well tubing; securing the safety valve with the first well tubing at the desired location by increasing fluid pressure in the second well tubing in a controlled manner; and forming a fluid passage to the safety valve from the surface between the first well tubing and the second well tubing to communicate control fluid pressure to the safety valve from the surface wherein the safety valve well tool is installed.
Claim 11
Independent Claim
161 words
A method of installing a controlled safety valve well tool at a desired subsurface location in a well having a first well tubing extending downwardly from the ground surface for flowing well fluids to the surface through the bore of the first well tubing, including the steps of: connecting a safety valve well tool with a second well tubing; moving the safety valve to a desired subsurface location in the well through the bore of the first well tubing by moving the second well tubing into the bore of the first well tubing; securing the safety valve with the first well tubing at the desired location by increasing fluid pressure in the second well tubing in a controlled manner; and forming a fluid passage to the safety valve from the surface between the first well tubing and the second well tubing to communicate control fluid pressure to the safety valve from the surface wherein the safety valve well tool is installed.
Claim 12
Independent Claim
179 words
A method of installing and operating a controlled safety valve well tool at a desired subsurface location in a well having a first well tubing extending downwardly from the ground surface for flowing well fluids to the surface through the bore of the first well tubing, includiNg the steps of: connecting a safety valve well tool with a second well tubing; moving the safety valve to a desired subsurface location in the well through the bore of the first well tubing by moving the second well tubing into the bore of the first well tubing; securing the safety valve with the first well tubing at the desired location by increasing fluid pressure in the second well tubing; forming a fluid passage to the secured safety valve from the surface between the first well tubing and the second well tubing to communicate control fluid pressure to the safety valve from the surface; and controlling the pressure of the fluid in the fluid passage for operating the safety valve wherein the safety valve operates to control flow at the subsurface location.
Claim 13
Independent Claim
179 words
A method of installing and operating a controlled safety valve well tool at a desired subsurface location in a well having a first well tubing extending downwardly from the ground surface for flowing well fluids to the surface through the bore of the first well tubing, includiNg the steps of: connecting a safety valve well tool with a second well tubing; moving the safety valve to a desired subsurface location in the well through the bore of the first well tubing by moving the second well tubing into the bore of the first well tubing; securing the safety valve with the first well tubing at the desired location by increasing fluid pressure in the second well tubing; forming a fluid passage to the secured safety valve from the surface between the first well tubing and the second well tubing to communicate control fluid pressure to the safety valve from the surface; and controlling the pressure of the fluid in the fluid passage for operating the safety valve wherein the safety valve operates to control flow at the subsurface location.
Claim 14
Dependent Claim
33 words
The method as set forth in claim 8, wherein the step of controlling includes: increasing the pressure of the fluid in the fluid passage for operating the safety valve to the open condition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |