US3196945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forward in situ combustion with water injection
Assignee: PAN AMERICAN PETROLEUM CO
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Filing: 1962-10-08
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Granted: 1965-07-27
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Forrest F Craig
- 👤 Karol L Hujsak
- 👤 David R Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:06
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS FOR THE RECOVERY OF VALUABLE PRODUCTS FROM A CARBONACEOUS DEPOSIT IN WHICH OFRWARD COMBUSTION CAN BE EFFECTED WITHOUT FURTHER TREATMENT, SAID DEPOSTI BEING PENETRATED AT SPACED POINTS BY AN INJECTION WELL AND A PRODUCING WELL, THE IMPROVEMENT WHICH COMPRISES IGNITING SAID DEPOSIT ADJACENT THE FACE OF SAID INJECTION WELL TO FORM A COMBUSTION FRONT, THEREAFTER PROPAGATING THE RESULTING COMBUSTION FRONT THROUGH SAID DEPOSIT BY INJECTING THEREIN VIA SAID INJECTION WELL AIR AND WATER IN A RATION OF FROM ABOUT 500 TO ABOUT 3000 S.C.F. OF AIR PER BARREL OF WATER, AND RECOVERING VALUABLE PRODUCTS FROM SAID PRODUCING WELL.
Claim 2
Dependent Claim
101 words
IN A PROCESS FOR THE RECOVERY OF VALUABLE PRODUCTS FROM A CARBONACEOUS DEPOSIT IN WHICH OFRWARD COMBUSTION CAN BE EFFECTED WITHOUT FURTHER TREATMENT, SAID DEPOSTI BEING PENETRATED AT SPACED POINTS BY AN INJECTION WELL AND A PRODUCING WELL, THE IMPROVEMENT WHICH COMPRISES IGNITING SAID DEPOSIT ADJACENT THE FACE OF SAID INJECTION WELL TO FORM A COMBUSTION FRONT, THEREAFTER PROPAGATING THE RESULTING COMBUSTION FRONT THROUGH SAID DEPOSIT BY INJECTING THEREIN VIA SAID INJECTION WELL AIR AND WATER IN A RATION OF FROM ABOUT 500 TO ABOUT 3000 S.C.F. OF AIR PER BARREL OF WATER, AND RECOVERING VALUABLE PRODUCTS FROM SAID PRODUCING WELL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |