Patent US3007626A successfully refreshed from Google Patents.
US3724501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Undersea well test tree control valve and system
Assignee: JACKSON B INC US
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Filing: 1971-01-21
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Granted: 1973-04-03
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Expires: 1991-01-21
Abstract
Abstract As part of a subsea well system, a hydraulically actuated and sequentially opening and closing control valve incorporating an upper rotary valve actuated by a rack and pinion or linear actuator arrangement coupled with a lower valve actuated by a stinger or mandrel arrangement whereby the lower valve is opened before the rotary valve is opened and the rotary valve is closed before the lower valve is closed. The lower valve may be of the flapper type. The valve incorporates a hydraulic operator actuated in one direction to open the valve by application of hydraulic pressure from a remote source, and actuated in the reverse direction to close the valve by resilient springs and/or by subsea hydrostatic pressure. The valve may also be closed by closing the rams of the blowout preventer in the subsea system above the valve and applying pressure through the kill line of such blowout preventer.
Inventors
- 👤 L Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:33
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B34/00; E21B34/02; E21B34/04; E21B34/045; E21B2200/00; E21B2200/03; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/87917; Y10T137/87981
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
229 words
A subsea control valve comprising: a. an elongated valve body adapted for connection into a conduit; b. actuating fluid flow mandrel means mounted within said body for movement between first and second positions within said body; c. hydraulic actuating means connected with said body and said mandrel means and operative to move said mandrel means between said first and said second positions; d. first valve means mounted within said body and operative to be opened by movement of said mandrel means from said first position to said second position; e. second valve means mounted within said body and operative to remain closed until said first valve means has been fully opened by movement of said mandrel means then to be opened in sequence by continued movement of said mandrel means from said first position to said second position; f. said mandrel means being operative first to fully close said second valve means and then to close said first valve means in sequence upon movement of said mandrel means from said second position to said first position; g. return means mounted between said mandrel means and said body which is operative to urge said mandrel means from said second position to said first position; and h. wherein said first valve means includes a flapper type valve mounted within said valve body and adapted to be opened by said mandrel means.
Claim 2
Dependent Claim
229 words
A subsea control valve comprising: a. an elongated valve body adapted for connection into a conduit; b. actuating fluid flow mandrel means mounted within said body for movement between first and second positions within said body; c. hydraulic actuating means connected with said body and said mandrel means and operative to move said mandrel means between said first and said second positions; d. first valve means mounted within said body and operative to be opened by movement of said mandrel means from said first position to said second position; e. second valve means mounted within said body and operative to remain closed until said first valve means has been fully opened by movement of said mandrel means then to be opened in sequence by continued movement of said mandrel means from said first position to said second position; f. said mandrel means being operative first to fully close said second valve means and then to close said first valve means in sequence upon movement of said mandrel means from said second position to said first position; g. return means mounted between said mandrel means and said body which is operative to urge said mandrel means from said second position to said first position; and h. wherein said first valve means includes a flapper type valve mounted within said valve body and adapted to be opened by said mandrel means.
Claim 3
Dependent Claim
282 words
A subsea control valve comprising: a. an elongated valve body adapted for connection into a conduit; b. actuating fluid flow mandrel means mounted within said body for movement between first and second positions within said body; c. hydraulic actuating means connected with said body and said mandrel means and operative to move said mandrel means between said first and said second positions; d. first valve means mounted within said body and operative to be opened by movement of said mandrel means from said first position to said second position; e. second valve means mounted within said body and operative to remain closed until said first valve means has been fully opened by movement of said mandrel means then to be opened in sequence by continued movement of said mandrel means from said first position to said second position; f. said mandrel means being operative first to fully close said second valve means and then to close said first valve means in sequence upon movement of said mandrel means from said second position to said first position; g. return means mounted between said mandrel means and said body which is operative to urge said mandrel means from said second position to said first position; h. wherein said second valve includes a rotary valve body mounted with said mandrel means, a rotary valve member mounted for rotation within said rotary valve body, and rotary actuating means to rotate said valve between opened and closed positions in response to movement of said mandrel means within said body; and i. wherein said first valve means includes a flapper type valve mounted within said valve body to be pushed open by an extension of said mandrel means.
Claim 4
Dependent Claim
282 words
A subsea control valve comprising: a. an elongated valve body adapted for connection into a conduit; b. actuating fluid flow mandrel means mounted within said body for movement between first and second positions within said body; c. hydraulic actuating means connected with said body and said mandrel means and operative to move said mandrel means between said first and said second positions; d. first valve means mounted within said body and operative to be opened by movement of said mandrel means from said first position to said second position; e. second valve means mounted within said body and operative to remain closed until said first valve means has been fully opened by movement of said mandrel means then to be opened in sequence by continued movement of said mandrel means from said first position to said second position; f. said mandrel means being operative first to fully close said second valve means and then to close said first valve means in sequence upon movement of said mandrel means from said second position to said first position; g. return means mounted between said mandrel means and said body which is operative to urge said mandrel means from said second position to said first position; h. wherein said second valve includes a rotary valve body mounted with said mandrel means, a rotary valve member mounted for rotation within said rotary valve body, and rotary actuating means to rotate said valve between opened and closed positions in response to movement of said mandrel means within said body; and i. wherein said first valve means includes a flapper type valve mounted within said valve body to be pushed open by an extension of said mandrel means.
Claim 5
Dependent Claim
34 words
The control valve of claim 2 wherein said rotary actuating means includes a gear pinion mounted with said rotary valve member adapted to mesh with a gear rack mounted with said elongated valve body.
Claim 6
Dependent Claim
298 words
A subsea control valve comprising: a. an elongated valve body adapted for connection into a conduit; b. actuating fluid flow mandrel means mounted within said body for movement between first and second positions within said body; c. hydraulic actuating means connected with said body and said mandrel means and operative to move said mandrel means between said first and said second positions; d. first valve means mounted within said body and operative to be opened by movement of said mandrel means from said first position to said second position; e. second valve meanS mounted within said body and operative to remain closed until said first valve has been fully opened by movement of said mandrel means then to be sequentially opened by continued movement of said mandrel means from said first position to said second position and vice versa whereby said first valve means and said second valve means are sequentially opened and sequentially closed upon movement of said mandrel means between said first position and said second position; f. wherein return means is provided between said mandrel means and said body which is operative to urge said mandrel from said second position to said first position; and g. wherein said first valve means includes a flapper type valve mounted on said valve body adapted to be opened by said mandrel means and wherein said second valve means includes a rotary valve body mounted with said mandrel means, a rotary valve member mounted for rotation within said body, and rotating means to rotate said valve between opened and closed positions in response to movement of said mandrel means within said body said rotating means including a gear pinion mounted with said rotary valve member and adapted to mesh with a gear rack mounted with said elongated valve body.
Claim 7
Dependent Claim
298 words
A subsea control valve comprising: a. an elongated valve body adapted for connection into a conduit; b. actuating fluid flow mandrel means mounted within said body for movement between first and second positions within said body; c. hydraulic actuating means connected with said body and said mandrel means and operative to move said mandrel means between said first and said second positions; d. first valve means mounted within said body and operative to be opened by movement of said mandrel means from said first position to said second position; e. second valve meanS mounted within said body and operative to remain closed until said first valve has been fully opened by movement of said mandrel means then to be sequentially opened by continued movement of said mandrel means from said first position to said second position and vice versa whereby said first valve means and said second valve means are sequentially opened and sequentially closed upon movement of said mandrel means between said first position and said second position; f. wherein return means is provided between said mandrel means and said body which is operative to urge said mandrel from said second position to said first position; and g. wherein said first valve means includes a flapper type valve mounted on said valve body adapted to be opened by said mandrel means and wherein said second valve means includes a rotary valve body mounted with said mandrel means, a rotary valve member mounted for rotation within said body, and rotating means to rotate said valve between opened and closed positions in response to movement of said mandrel means within said body said rotating means including a gear pinion mounted with said rotary valve member and adapted to mesh with a gear rack mounted with said elongated valve body.
Claim 8
Dependent Claim
15 words
The control valve set forth in claim 4 wherein said return means includes compression springs.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |