US3272262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition of thick pay formations
Assignee: Pan American Petroleum Corp
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Filing: 1964-01-23
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Granted: 1966-09-13
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Karol L Hujsak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:37
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
IN A METHOD FOR IGNITING A THICK, CARBONACEOUS DEPOSITE PENETRATED BY A CASED WELL HAVING PERFORATIONS OPPOSITE AND THROUGHOUT THE THICKNESS OF SAID DEPOSIT, THE IMPROVEMENT WHICH COMPRISES ISOLATING A FIRST ZONE OPPOSITE SAID DEPOSIT IN SAID WELL EXTENDING SUBSTANTIALLY THE ENTIRE HEIGHT OF SAID DEPOSITE, CONDUCTING SEPARATE STREAMS OF FUEL AND AIR IN COMBUSTIBLE PROPORTIONS INTO A SECOND ZONE WITHIN SAID FIRST ZONE TO FORM A COMBUSTIBLE MIXTURE, IGNITING SAID MIXTURE IN SAID SECOND ZONE AND CONTINUING THE INJECTION OF SAID FUEL AND AIR IN COMBUSTIBLE PROPORTIONS INTO SAID SECOND ZONE TO PRO-
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |