US3376925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the use of emulsions in petroleum recovery
Assignee: Marathon Oil Co
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Filing: 1963-11-18
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Granted: 1968-04-09
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Claude P Coppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR THE RECOVERY OF PETROLEUM FROM PERMEABLE SUBTERRANEAN FORMATIONS HAVING A PLURALITY OF WELLS DRILLED THEREIN COMPRISING INJECTING INTO SAID FORMATION THROUGH A PORTION OF THE WELLS AN EMULSION BANK, SAID BANK BEING A WATER-IN-OIL EMULSION AT THE EMULSIONPETROLEUM INTERFACE AND AN OIL-IN-WATER EMULSION AT THE EMULSION-DRIVE MATERIAL INTERFACE; THEREAFTER INJECTING WATER INTO THE FORMATION TO DISPLACE THE BANK FROM ITS INITIAL POSITION WITHIN THE FORMATION AND RECOVERY PETROLEUM FROM A SECOND PORTION OF THE WELLSS DRILLED INTO THE FORMATION.
Claim 2
Dependent Claim
82 words
A PROCESS FOR THE RECOVERY OF PETROLEUM FROM PERMEABLE SUBTERRANEAN FORMATIONS HAVING A PLURALITY OF WELLS DRILLED THEREIN COMPRISING INJECTING INTO SAID FORMATION THROUGH A PORTION OF THE WELLS AN EMULSION BANK, SAID BANK BEING A WATER-IN-OIL EMULSION AT THE EMULSIONPETROLEUM INTERFACE AND AN OIL-IN-WATER EMULSION AT THE EMULSION-DRIVE MATERIAL INTERFACE; THEREAFTER INJECTING WATER INTO THE FORMATION TO DISPLACE THE BANK FROM ITS INITIAL POSITION WITHIN THE FORMATION AND RECOVERY PETROLEUM FROM A SECOND PORTION OF THE WELLSS DRILLED INTO THE FORMATION.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |