Patent US2024807A successfully refreshed from Google Patents.
Patent US3354954A successfully refreshed from Google Patents.
US3354954A
Expired / Lapsed
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Steam injection process for recovery of petroleum
Assignee: Pan American Petroleum Corp
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Filing: 1965-12-20
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Granted: 1967-11-28
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Buxton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:08
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A METHOD FOR RECOVERING PETROLEUM FROM AN UNDERGROUND DEPOSIT THEREOF, SAID DEPOSIT BEING PENETRATED BY AN INJECTIN WELL AND A PRODUCING WELL, THE IMPROVEMENT WHICH COMPRISES INJECTIN STREAM INTO SAID DEPOSIT VIA SAID INJECTION WELL UNTIL IT BREAKS THROUGH INTO SAID PRODUCING WELL, AND THEREAFTER DISCONTINUING THE INTRODUCTION OF SAID STEAM UNTIL THE BOTTOM HOLE TEMPERATURE IN SAID PRODUCING WELL IS BELOW THE TEMPERATUE OF SAID STEAM AT BREAKTHROUGH INTO SAID PRODUCING WELL TO PERMIT SAID STEAM TO CONDENSE IN THE MORE PERMEABLE ZONES OF SAID DEPOSIT, PRODUCING HOT FLUIDS CONTAINING PETROLEUM FROM SAID PRODUCING WELL AND REPEATING THE ABOVE CYCLE.
Claim 2
Dependent Claim
102 words
IN A METHOD FOR RECOVERING PETROLEUM FROM AN UNDERGROUND DEPOSIT THEREOF, SAID DEPOSIT BEING PENETRATED BY AN INJECTIN WELL AND A PRODUCING WELL, THE IMPROVEMENT WHICH COMPRISES INJECTIN STREAM INTO SAID DEPOSIT VIA SAID INJECTION WELL UNTIL IT BREAKS THROUGH INTO SAID PRODUCING WELL, AND THEREAFTER DISCONTINUING THE INTRODUCTION OF SAID STEAM UNTIL THE BOTTOM HOLE TEMPERATURE IN SAID PRODUCING WELL IS BELOW THE TEMPERATUE OF SAID STEAM AT BREAKTHROUGH INTO SAID PRODUCING WELL TO PERMIT SAID STEAM TO CONDENSE IN THE MORE PERMEABLE ZONES OF SAID DEPOSIT, PRODUCING HOT FLUIDS CONTAINING PETROLEUM FROM SAID PRODUCING WELL AND REPEATING THE ABOVE CYCLE.
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |