US3110344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery process utilizing oilmiscible solvents
Assignee: Sinclair Research Inc
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Filing: 1959-10-23
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Granted: 1963-11-12
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Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Harry L Pelzer
- 👤 Jr John C Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:31
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A METHOD FOR RECOVERY OF OIL FROM AN OIL-BEARING SUBTERRANEAN FORMATION WHEREIN INJECTION WELLS PROVIDE COMMUNICATION WITH THE OIL-BEARING FORMATION AND RECOVERY IS EFFECTED AT A PRODUCTION WELL, THE STEPS WHICH COMPRISE INJECTING WATER INTO INPUT WELLS SURROUNDING A PRODUCTION WELL TO EXTABLISH WATER FLOW TO THE OUTPUT WELL, CONTINUING SAID INJECTING WHILE INJECTING AN OIL-MISCIBLE SOLVENT INTO THE FORMATION THROUGH WELLS SURROUNDING THE PRODUCTION WELL AND LOCATED BETWEEN THE PRODUCTION WELL AND THE WATER INPUT WELLS TO ESTABLISH FLOW OF SOLVENT TO SAID OUTPUT WELL.
Claim 2
Dependent Claim
87 words
IN A METHOD FOR RECOVERY OF OIL FROM AN OIL-BEARING SUBTERRANEAN FORMATION WHEREIN INJECTION WELLS PROVIDE COMMUNICATION WITH THE OIL-BEARING FORMATION AND RECOVERY IS EFFECTED AT A PRODUCTION WELL, THE STEPS WHICH COMPRISE INJECTING WATER INTO INPUT WELLS SURROUNDING A PRODUCTION WELL TO EXTABLISH WATER FLOW TO THE OUTPUT WELL, CONTINUING SAID INJECTING WHILE INJECTING AN OIL-MISCIBLE SOLVENT INTO THE FORMATION THROUGH WELLS SURROUNDING THE PRODUCTION WELL AND LOCATED BETWEEN THE PRODUCTION WELL AND THE WATER INPUT WELLS TO ESTABLISH FLOW OF SOLVENT TO SAID OUTPUT 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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |