US2745647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of underground cavities
Assignee: Phillips Petroleum Co
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Filing: 1952-07-21
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Granted: 1956-05-15
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Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 Forrest E Gilmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/29; E21B43/292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
AN APPARATUS FOR THE FORMATION OF AN UNDERGROUND CAVERN COMPRISING, IN COMBINATION, A WELL CASING PROJECTING DOWNWARDLY IN A WELL BORE, SEALING MEANS FOR SAID CASING AT ITS UPPER END, CONDUIT MEANS FOR INTRODUCING A GAS AND LIQUID INTO SAID CASING, A TUBING WITHIN AND SPACED FROM SAID CASING, SAID TUBING EXTENDING THROUGH SAID SEALING MEANS AND AT LEAST TO THE BOTTOM TO SAID CASING, A CYLINDRICAL SLEEVE WITHIN SAID CASING AND DISPOSED ABOUT SAID TUBING, SAID SLEEVE BEING NOT LONGER THAN THE DESIRED HEIGHT TO SAID CAVERN AND BEING IN SUBSTANTIALLY AIR-TIGHT CONNECTION WITH SAID CASING BUT MOVABLE WITHIN SAID CASING, AN ANNULAR PLATE HAVING A CENTRAL PERFORATION THROUGH WHICH SAID TUBING IS DISPOSED AND HAVING A PLURALITY OF OTHER PERFORATIONS, SAID PLATE BEING RIGIDLY ATTACHED TO SAID TUBING AND TO THE BOTTOM CIRCUMFERENCE OF SAID SLEEVE, FLEXIBLE NOZZLES ATTACHED TO SAID PLATE AT SAID PLURALITY OF OTHER PERFORATIONS, AND MEANS FOR RAISING, LOWERING AND ROTATING SAID TUBING.
Claim 2
Independent Claim
159 words
AN APPARATUS FOR THE FORMATION OF AN UNDERGROUND CAVERN COMPRISING, IN COMBINATION, A WELL CASING PROJECTING DOWNWARDLY IN A WELL BORE, SEALING MEANS FOR SAID CASING AT ITS UPPER END, CONDUIT MEANS FOR INTRODUCING A GAS AND LIQUID INTO SAID CASING, A TUBING WITHIN AND SPACED FROM SAID CASING, SAID TUBING EXTENDING THROUGH SAID SEALING MEANS AND AT LEAST TO THE BOTTOM TO SAID CASING, A CYLINDRICAL SLEEVE WITHIN SAID CASING AND DISPOSED ABOUT SAID TUBING, SAID SLEEVE BEING NOT LONGER THAN THE DESIRED HEIGHT TO SAID CAVERN AND BEING IN SUBSTANTIALLY AIR-TIGHT CONNECTION WITH SAID CASING BUT MOVABLE WITHIN SAID CASING, AN ANNULAR PLATE HAVING A CENTRAL PERFORATION THROUGH WHICH SAID TUBING IS DISPOSED AND HAVING A PLURALITY OF OTHER PERFORATIONS, SAID PLATE BEING RIGIDLY ATTACHED TO SAID TUBING AND TO THE BOTTOM CIRCUMFERENCE OF SAID SLEEVE, FLEXIBLE NOZZLES ATTACHED TO SAID PLATE AT SAID PLURALITY OF OTHER PERFORATIONS, AND MEANS FOR RAISING, LOWERING AND ROTATING SAID TUBING.
References Cited (Backward Citations)
US2251916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |