US5230383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically actuated well annulus safety valve
Assignee: Camco International Inc
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Filing: 1992-09-29
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Granted: 1993-07-27
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Expires: 2012-09-29
Abstract
Abstract A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.
Inventors
- 👤 Ronald E. Pringle
- 👤 Arthur J. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:33
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B17/00; E21B17/02; E21B17/04; E21B17/06; E21B33/124; E21B33/1243; E21B34/00; E21B34/06; E21B34/066; E21B2200/00; E21B2200/05; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; E21B43/1235
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
An electrically actuated well annulus safety valve for controlling fluid flow between a production string and a casing comprising, a housing having an inner bore and an outer passageway therethrough, passageway valve means connected to the housing for opening and closing the passageway, biasing means in the housing for biasing the valve means to the closed position, an armature secured to the valve means, a solenoid coil in the housing for attracting the armature for opening the passageway, an equalizing valve in the housing bypassing the passageway valve means, and electrically operated means in the housing for opening and closing the equalizing valve.
Claim 2
Dependent Claim
103 words
An electrically actuated well annulus safety valve for controlling fluid flow between a production string and a casing comprising, a housing having an inner bore and an outer passageway therethrough, passageway valve means connected to the housing for opening and closing the passageway, biasing means in the housing for biasing the valve means to the closed position, an armature secured to the valve means, a solenoid coil in the housing for attracting the armature for opening the passageway, an equalizing valve in the housing bypassing the passageway valve means, and electrically operated means in the housing for opening and closing the equalizing valve.
Claim 3
Dependent Claim
31 words
The annulus safety valve of claim 1 wherein the equalizing valve includes a rotating ring having an opening and the electrically operated means includes an electric motor connected to the ring.
Claim 4
Dependent Claim
31 words
The annulus safety valve of claim 1 including, a transducer connected to the passageway valve means and electrically connected to the well surface for determining the position of the valve means.
Claim 5
Dependent Claim
98 words
The annulus safety valve of claim 1 including, an initially retracted packer seal means surrounding said housing, initially retracted slip means surrounding said housing, fluid actuated piston means connected to the housing for expanding and setting the slip means and the packer seal means, an initially closed fluid chamber in the housing containing a fluid source, a frangible member initially blocking communication between the piston means and the fluid chamber, and an electrical motor in the housing connected to the frangible member for breaking the member and allowing fluid source in the chamber to actuate the piston means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |