US3123136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
figures
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
•
Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:50
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN THE SECONDARY RECOVERY OF OIL FROM A SUBTERRANEAN FORMATION PENETRATED BY AT LEAST ONE INJECTION WELL AND ONE PRODUCTION WELL WHEREIN A HYDROCARBON FLUID IS INJECTED INTO SAID FORMATION THROUGH SAID INJECTION WELL TO DISPLACE SAID OIL FROM SAID FORMATION THROUGH SAID PRODUCTION WELL, A METHOD OF IMPROVING THE SWEEP PATTERN OF SAID FLUID WHICH COMPRISES INJECTING LIQUID AMMONIA INTO SAID FORMATION THROUGH SAID INJECTION WELL, THE QUANTITY OF SAID AMMONIA BEING NO MORE THAN ONE PERCENT OF THE PORE VOLUME OF SAID FORMATION, DRIVING SAID AMMONIA THROUGH SAID FORMATION INTO CONTACT WITH THE INTERSTITIAL WATER OF SAID FORMATION TO FORM A WATER BANK OF SAID WATER, AND DRIVING SAID WATER BANK THROIUGH SAID FORMATION TOWARD SAID PRODUCTION WELL BY MEANS OF SAID FLUID.
Claim 2
Dependent Claim
125 words
IN THE SECONDARY RECOVERY OF OIL FROM A SUBTERRANEAN FORMATION PENETRATED BY AT LEAST ONE INJECTION WELL AND ONE PRODUCTION WELL WHEREIN A HYDROCARBON FLUID IS INJECTED INTO SAID FORMATION THROUGH SAID INJECTION WELL TO DISPLACE SAID OIL FROM SAID FORMATION THROUGH SAID PRODUCTION WELL, A METHOD OF IMPROVING THE SWEEP PATTERN OF SAID FLUID WHICH COMPRISES INJECTING LIQUID AMMONIA INTO SAID FORMATION THROUGH SAID INJECTION WELL, THE QUANTITY OF SAID AMMONIA BEING NO MORE THAN ONE PERCENT OF THE PORE VOLUME OF SAID FORMATION, DRIVING SAID AMMONIA THROUGH SAID FORMATION INTO CONTACT WITH THE INTERSTITIAL WATER OF SAID FORMATION TO FORM A WATER BANK OF SAID WATER, AND DRIVING SAID WATER BANK THROIUGH SAID FORMATION TOWARD SAID PRODUCTION WELL BY MEANS OF SAID FLUID.
References Cited (Backward Citations)
US2776714A
Cited
US2813583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |