US4295795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming remotely actuated gas lift systems and balanced valve systems made thereby
Assignee: Texaco Inc
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Filing: 1979-06-11
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Granted: 1981-10-20
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Expires: 1999-06-11
Abstract
Abstract One or more balanced gas lift valves mounted on an oil production tube deep in a well are responsive to a remote valve control transmitter at the surface for controlling the ejection of a fluid, as a gas for example, into the production tube of oil for decreasing the specific gravity for lifting the oil and for increased production of the oil. This electronic remote controlled gas lift has fluid vent means therein for equalizing the fluid pressure on all sides and both ends thereof for reducing resistance to movement for thus requiring minimum energy for operation thereof, and for providing a highly efficient gas lift system for lifting oil in the well.
Inventors
- 👤 John C. Gass
- 👤 Noell C. Kerr
- 👤 Robert W. Pittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:12
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; E21B34/00; E21B34/06; E21B34/066; E21B43/1235; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
A remotely actuated gas lift system for improved efficiency in lifting oil in a production tube internally of a well casing comprising, (a) remote valve control means at the surface, (b) valve means having a magnetic core in the well responsive to said remote valve control means for being opened to eject casing fluid through a passage into the production tube for lifting the oil in the production tube and for being closed for stopping flow of casing fluid into the production tube, (c) said valve means has means for equalizing the casing fluid pressure on both ends of said magnetic core for reducing resistance to movement and providing a balanced valve means requiring a minimum of energy for operation thereof, and (d) said means for equalizing said casing fluid pressure on both ends of said magnetic core comprising casing fluid passage means extending completely through said magnetic core for the length thereof for circulating casing fluids freely to both ends thereof.
Claim 2
Dependent Claim
162 words
A remotely actuated gas lift system for improved efficiency in lifting oil in a production tube internally of a well casing comprising, (a) remote valve control means at the surface, (b) valve means having a magnetic core in the well responsive to said remote valve control means for being opened to eject casing fluid through a passage into the production tube for lifting the oil in the production tube and for being closed for stopping flow of casing fluid into the production tube, (c) said valve means has means for equalizing the casing fluid pressure on both ends of said magnetic core for reducing resistance to movement and providing a balanced valve means requiring a minimum of energy for operation thereof, and (d) said means for equalizing said casing fluid pressure on both ends of said magnetic core comprising casing fluid passage means extending completely through said magnetic core for the length thereof for circulating casing fluids freely to both ends thereof.
Claim 3
Dependent Claim
31 words
A gas lift system as recited in claim 1 wherein, (a) said valve means comprises an electromagnetically actuated valve for opening and closing the casing fluid passage to the production tube.
Claim 4
Dependent Claim
214 words
A remotely actuated gas lift system for improved efficiency in lifting oil in a production tube internally of a well casing comprising, (a) remote valve control means at the surface, (b) valve means in the well responsive to said remote valve control means for being opened to eject casing fluid through a passage into the production tube for lifting the oil in the production tube and for being closed for stopping flow of casing fluid into the production tube, (c) said valve means has means for equalizing the fluid pressure on all sides and on both ends thereof for reducing resistance to movement and providing a balanced valve means requiring a minimum of energy for operation thereof, (d) said valve means comprising an open ended sleeve slideable between a first position closing the casing fluid passage to the production tubing and a second position opening said casing fluid passage, (e) electromagnetic means for actuating said valve means, (f) said remote valve control means at the surface being means for controlling said electromagnet actuated valve means, and (g) said electromagnetic actuated valve means being responsive to said remote control means for being opened for injecting casing fluid into the production tube and for being closed for stopping flow of casing fluid to the production tube.
Claim 5
Dependent Claim
214 words
A remotely actuated gas lift system for improved efficiency in lifting oil in a production tube internally of a well casing comprising, (a) remote valve control means at the surface, (b) valve means in the well responsive to said remote valve control means for being opened to eject casing fluid through a passage into the production tube for lifting the oil in the production tube and for being closed for stopping flow of casing fluid into the production tube, (c) said valve means has means for equalizing the fluid pressure on all sides and on both ends thereof for reducing resistance to movement and providing a balanced valve means requiring a minimum of energy for operation thereof, (d) said valve means comprising an open ended sleeve slideable between a first position closing the casing fluid passage to the production tubing and a second position opening said casing fluid passage, (e) electromagnetic means for actuating said valve means, (f) said remote valve control means at the surface being means for controlling said electromagnet actuated valve means, and (g) said electromagnetic actuated valve means being responsive to said remote control means for being opened for injecting casing fluid into the production tube and for being closed for stopping flow of casing fluid to the production tube.
Claim 6
Dependent Claim
46 words
A gas lift valve assembly as recited in claim 1 wherein, (a) said valve means comprises a plurality of electromagnetic actuated valve means spaced vertically of each other on the production tube for injecting casing fluid into the production tube at various levels in the well.
Claim 7
Dependent Claim
121 words
A gas lift system as recited in claim 1 wherein, (a) said valve means has fluid vents on the sides thereof for equalizing the fluid pressure on the sides for reducing resistance to movement and providing a balanced valve means requiring a minimum of energy for operation thereof, (b) said remote valve control means at the surface comprises an electrical switch means for controlling each of the electromagnetic actuated valve means, and (c) each of said electromagnetic actuated valve means being responsive to said remote valve control electrical switch means for being opened in any predetermined sequence for ejecting casing fluid into the production tube at the desired levels in the well for the efficient lifting of liquids in the well.
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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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |