Patent US5293484A successfully refreshed from Google Patents.
Patent US3285338A successfully refreshed from Google Patents.
US3285338A
Expired / Lapsed
US
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Method for oil recovery
Assignee: Mobil Oil AS
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Filing: 1963-08-23
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Granted: 1966-11-15
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Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 William G Boston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:00
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN THE RECOVERY OF OIL FROM A RESERVOIR HAVING A HIGH PERMEABILITY ZONE BY INJECTING A DRIVING FLUID CONTAINING A MATERIAL INTO A FIRST WELL TO DISPLACE OIL TOWARD A SECOND WELL, SAID MATERIAL CAPABLE OF CONVERTING A SOLUTION OF A SUBSTANCE TO A PLUGGING MATERIAL BY THEIR REACTION WITHIN THE RESERVOIR, AND THE METHOD COMPRISING THE STEPS OF: (A) PRODUCING OIL FROM THE SECOND WELL UNTIL THE DRIVING FLUID CONTAINING THE DESCRIBED MATERIAL BREAKS THROUGH INTO THE SECOND WELL AT THE HEIGH PERMEABILITY ZONE IN THE RESERVOIR, (B) TERMINATING THE INJECTION OF FLUIDS INTO THE FIRST WELL, (C) INTRODUCING INTO THE RESERVOIR FROM THE SECOND WELL A SOLUTION OF A SUBSTANCE CONVERTIBLE TO A PLUGGING MATERIAL UPON REACTION WITH THE DESCRIBED MATERIAL IN THE DRIVING FLUID IN THE RESERVOIR, AND (D) RESULTING THE STEPS OF INTRODUCINT THE DRIVING FLUID CONTAINING THE DESCRIBED MATERIAL INTO THE FIRST WELL AND PRODUCING OIL FROM THE SECOND WELL.
Claim 2
Dependent Claim
155 words
IN THE RECOVERY OF OIL FROM A RESERVOIR HAVING A HIGH PERMEABILITY ZONE BY INJECTING A DRIVING FLUID CONTAINING A MATERIAL INTO A FIRST WELL TO DISPLACE OIL TOWARD A SECOND WELL, SAID MATERIAL CAPABLE OF CONVERTING A SOLUTION OF A SUBSTANCE TO A PLUGGING MATERIAL BY THEIR REACTION WITHIN THE RESERVOIR, AND THE METHOD COMPRISING THE STEPS OF: (A) PRODUCING OIL FROM THE SECOND WELL UNTIL THE DRIVING FLUID CONTAINING THE DESCRIBED MATERIAL BREAKS THROUGH INTO THE SECOND WELL AT THE HEIGH PERMEABILITY ZONE IN THE RESERVOIR, (B) TERMINATING THE INJECTION OF FLUIDS INTO THE FIRST WELL, (C) INTRODUCING INTO THE RESERVOIR FROM THE SECOND WELL A SOLUTION OF A SUBSTANCE CONVERTIBLE TO A PLUGGING MATERIAL UPON REACTION WITH THE DESCRIBED MATERIAL IN THE DRIVING FLUID IN THE RESERVOIR, AND (D) RESULTING THE STEPS OF INTRODUCINT THE DRIVING FLUID CONTAINING THE DESCRIBED MATERIAL INTO THE FIRST WELL AND PRODUCING OIL FROM THE SECOND WELL.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |