Patent US2402192A successfully refreshed from Google Patents.
Patent US3199587A successfully refreshed from Google Patents.
US3199587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of oil by improved fluid drive
Assignee: Phillips Petroleum Co
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Filing: 1962-09-10
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Granted: 1965-08-10
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Santourian Melcon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:44
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20; E21B43/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD FOR PRODUCING AN OIL-BEARING SUBTERRANEAN STRATUM BY FLUID DRIVE DISPLACEMENT USING A WELL PATTERN INCLUDING A CENTRAL WELL AND AN EVEN NUMBER OF AT LEAST 4 SURROUNDING WELLS IN A CONVENTIONAL ODD-NUMBERED-SPOT PATTERN, WHICH COMPRISES INJECTING DRIVING FLUID THROUGH ALTERNATE SURROUNDING WELLS AND PRODUCING THE DRIVEN OIL THROUGH SAID CENTRAL WELL AND THROUGH THE REMAINING SURROUNDING WELLS AS PRODUCING WELLS; MAINTAINING BACK PRESSURE ON THE PRODUCTION WELLS; CONTROLLING THE BACK PRESSURE ON SAID PRODUCING WELLS SO AS TO EFFECT BREAKTHROUGH (PRODUCTION OF DISPLACING FLUID) AT THE PRODUCING WELLS SUBSTANTIALLY AT THE SAME TIME; AND CONTINUING INJECTION OF SAID FLUID THROUGH SAID INJECTION WELLS UNTIL BREAKTHROUGH AT ALL OF SAID PRODUCING WELLS OCCURS.
Claim 2
Independent Claim
114 words
THE METHOD FOR PRODUCING AN OIL-BEARING SUBTERRANEAN STRATUM BY FLUID DRIVE DISPLACEMENT USING A WELL PATTERN INCLUDING A CENTRAL WELL AND AN EVEN NUMBER OF AT LEAST 4 SURROUNDING WELLS IN A CONVENTIONAL ODD-NUMBERED-SPOT PATTERN, WHICH COMPRISES INJECTING DRIVING FLUID THROUGH ALTERNATE SURROUNDING WELLS AND PRODUCING THE DRIVEN OIL THROUGH SAID CENTRAL WELL AND THROUGH THE REMAINING SURROUNDING WELLS AS PRODUCING WELLS; MAINTAINING BACK PRESSURE ON THE PRODUCTION WELLS; CONTROLLING THE BACK PRESSURE ON SAID PRODUCING WELLS SO AS TO EFFECT BREAKTHROUGH (PRODUCTION OF DISPLACING FLUID) AT THE PRODUCING WELLS SUBSTANTIALLY AT THE SAME TIME; AND CONTINUING INJECTION OF SAID FLUID THROUGH SAID INJECTION WELLS UNTIL BREAKTHROUGH AT ALL OF SAID PRODUCING WELLS OCCURS.
References Cited (Backward Citations)
US1826371A
Cited
US2885002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |