US3289758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering petroleum
Assignee: ConocoPhillips Co
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Filing: 1962-07-11
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Granted: 1966-12-06
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Expires: 1982-07-11
Abstract
No abstract record available.
Inventors
- 👤 William L Martin
- 👤 Felsenthal Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:17
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A METHOD OF RECOVERING OIL FROM AN OIL-BEARING SUBSURFACE STRATUM HAVING A WATER-BEARING STRATUM THEREBELOW, COMPRISING THE STEPS OF: DRILLING AN INJECTION WELL THROUGH BOTH THE OIL-BEARING AND WATER-BEARING STRATA; DRILLING AT LEAST ONE RECOVERY WELL INTO THE OIL-BEARING STRATUM AT A DISTANCE FROM THE INJECTION WELL; FORCING GAS THROUGH THE INJECTION WELL AND INTO AND THROUGH THE WATER-BEARING STRATUM TO DECREASE THE PERMEABILITY OF THIS STRATUM TO WATER; FORCING WATER THROUGH THE INJECTION WELL AND INTO AND THROUGH THE OIL-BERING STRATUM TO DISPLACE OIL INTO THE RECOVERY WELL; AND RECOVERING THE OIL FROM THE RECOVERY WELL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |