US3160205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery water flooding process
Assignee: Phillips Petroleum Co
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Filing: 1963-02-26
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Granted: 1964-12-08
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Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Robert R Harvey
- 👤 Richard H Langenheim
- 👤 Joseph C Trantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:44
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/58; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF DISPLACING OIL FROM A SUBTERRANEAN FORMATION WHICH COMPRISES INJECTING INTO THE FORMATION AT A SELCTED REGION THEREOF IN SUCCESSION (1) A FIRST VOLUME OF WATER SUBSTANTIALLY FREE OF OTHER MATERIALS, (2) A SECOND VOLUME OF WATER HAVING A PH ABOVE 7, (3) A THIRD VOLUME OF WATER HAVING A PH ABOVE 7 AND CONTAINING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Independent Claim
65 words
THE METHOD OF DISPLACING OIL FROM A SUBTERRANEAN FORMATION WHICH COMPRISES INJECTING INTO THE FORMATION AT A SELCTED REGION THEREOF IN SUCCESSION (1) A FIRST VOLUME OF WATER SUBSTANTIALLY FREE OF OTHER MATERIALS, (2) A SECOND VOLUME OF WATER HAVING A PH ABOVE 7, (3) A THIRD VOLUME OF WATER HAVING A PH ABOVE 7 AND CONTAINING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF:
References Cited (Backward Citations)
US2246726A
Cited
US2831022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |