US3244231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for catalytically heating oil bearing formations
Assignee: Pan American Petroleum Corp
•
Filing: 1963-04-09
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Granted: 1966-04-05
•
Expires: 1983-04-09
Abstract
No abstract record available.
Inventors
- 👤 Grekel Howard
- 👤 Karol L Hujsak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:40
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD FOR HEATING A SUBSURFACE FORMATION CONTAINING COMBUSTIBLE MATERIAL, SAID FORMATION BEING PENETRATED BY A WELL, WHICH COMPRISES PLACING A BODY OF AN OXIDATION CATALYST IN SAID WELL AT THE APPROXIMATE LEVEL OF SAID FORMATION, THEREAFTER CONDUCTING A FUEL-AIR MIXTURE THROUGH SAID CATALYST, SAID MIXTURE BEING OUTSIDE THE EXPLOSIVE RANGE, AND PASSING THE RESULTING HOT OXIDATION PRODUCTS IN HEAT EXCHANGE RELATION WITH SAID FORMATION SAID PRODUCTS HAVING A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1100*F.
Claim 2
Independent Claim
77 words
A METHOD FOR HEATING A SUBSURFACE FORMATION CONTAINING COMBUSTIBLE MATERIAL, SAID FORMATION BEING PENETRATED BY A WELL, WHICH COMPRISES PLACING A BODY OF AN OXIDATION CATALYST IN SAID WELL AT THE APPROXIMATE LEVEL OF SAID FORMATION, THEREAFTER CONDUCTING A FUEL-AIR MIXTURE THROUGH SAID CATALYST, SAID MIXTURE BEING OUTSIDE THE EXPLOSIVE RANGE, AND PASSING THE RESULTING HOT OXIDATION PRODUCTS IN HEAT EXCHANGE RELATION WITH SAID FORMATION SAID PRODUCTS HAVING A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 1100*F.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |