US3136359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating oil wells
Assignee: Individual
•
Filing: 1961-08-11
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Granted: 1964-06-09
•
Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas T Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:48
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF RECOVERING OIL FROM AN OIL-BEARING FORMATION INTO WHICH A PLURALITY OF WELL BORES EXTEND, ONE OF SAID BORES HAVING A TUBING THEREIN EXTENDING DOWN TO AT LEAST THE OIL-BEARING FORMATION, SAID OTHER BORE PROVIDING A PRODUCTION WELL COMPRISING, INJECTING STEAM AND HEATED GAS INTO THE INJECTION WELL UNDER PRESSURE TO PROVIDE HEAT AND PRESSURE TO DRIVE OIL IN THE FORMATION TOWARD THE PRODUCTION WELL, PERIODICALLY OPENING SAID TUBING AT THE SURFACE FOR A SHORT PERIOD OF TIME TO REFLUX SAID FORMATION AND REMOVE FROM THE INJECTION WELL LIQUID WHICH MAY
Claim 2
Independent Claim
93 words
A METHOD OF RECOVERING OIL FROM AN OIL-BEARING FORMATION INTO WHICH A PLURALITY OF WELL BORES EXTEND, ONE OF SAID BORES HAVING A TUBING THEREIN EXTENDING DOWN TO AT LEAST THE OIL-BEARING FORMATION, SAID OTHER BORE PROVIDING A PRODUCTION WELL COMPRISING, INJECTING STEAM AND HEATED GAS INTO THE INJECTION WELL UNDER PRESSURE TO PROVIDE HEAT AND PRESSURE TO DRIVE OIL IN THE FORMATION TOWARD THE PRODUCTION WELL, PERIODICALLY OPENING SAID TUBING AT THE SURFACE FOR A SHORT PERIOD OF TIME TO REFLUX SAID FORMATION AND REMOVE FROM THE INJECTION WELL LIQUID WHICH MAY
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |