US2885002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovering oil after secondary recovery
Assignee: Jersey Production Research Co
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Filing: 1954-12-02
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Granted: 1959-05-05
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Expires: 1974-12-02
Abstract
No abstract record available.
Inventors
- 👤 Loren H Jenks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A SECONDARY RECOVERY METHOD OF RECOVERING OIL FROM A MULTI-WELL RESERVOIR IN WHICH WATER IS INJECTED INTO A PLURALITY OF WELLS AND OIL IS WITHDRAWN FROM THE REMAINING PRODUCING WELLS UNTIL THE RATIO OF WATER TO OIL PRODUCED IS IMPRACTICAL AND THERE REMAIN UNSWEPT SECTIONS OF THE RESERVIOR THAT EXTEND BETWEEN ADJACENT PRODUCING WELLS, THE IMPROVEMENT WHICH COMPRISES CLOSING OFF THE WATER INJECTION WELLS, INJECTING A BANK OF LIQUEFIELD PETROLEUM GAS INTO A PRODUCING WELL AT ONE END OF AT LEAST ONE OF SAID SECTIONS, MAINTAINING A PRESSURE ON THE SECTION TO RETAIN THE LIQUEFIED GAS IN LIQUID FORM, THEREAFTER DRIVING
Claim 2
Dependent Claim
102 words
IN A SECONDARY RECOVERY METHOD OF RECOVERING OIL FROM A MULTI-WELL RESERVOIR IN WHICH WATER IS INJECTED INTO A PLURALITY OF WELLS AND OIL IS WITHDRAWN FROM THE REMAINING PRODUCING WELLS UNTIL THE RATIO OF WATER TO OIL PRODUCED IS IMPRACTICAL AND THERE REMAIN UNSWEPT SECTIONS OF THE RESERVIOR THAT EXTEND BETWEEN ADJACENT PRODUCING WELLS, THE IMPROVEMENT WHICH COMPRISES CLOSING OFF THE WATER INJECTION WELLS, INJECTING A BANK OF LIQUEFIELD PETROLEUM GAS INTO A PRODUCING WELL AT ONE END OF AT LEAST ONE OF SAID SECTIONS, MAINTAINING A PRESSURE ON THE SECTION TO RETAIN THE LIQUEFIED GAS IN LIQUID FORM, THEREAFTER DRIVING
References Cited (Backward Citations)
US2347778A
Cited
GB696524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |