US2606871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse wetting, subsurface formation
Assignee: Texaco Inc
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Filing: 1951-04-27
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Granted: 1952-08-12
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Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Brink Karl C Ten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:04
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN THE PRODUCTION OF PETROLEUM HYDROCARBON BY MEANS OF A PRODUCING WELL EXTENDING INTO A POROUS, SUBSURFACE, OIL-BEARING FORMATION CONTAINING CONNATE FORMATION WATER, WHICH WETS THE SURFACES OF THE FORMATION AND IS HELD THEREIN BY CAPILLARY EFFECT, RENDERING THE FORMATION ABOUT THE WELL BORE PREFERENTIALLY OIL WETTABLE AND WATER REPELLENT BY CONTACTING THE FORMATION ABOUT THE WELL BORE WITH A SALT OF ROSIN AMINE, AND THEREAFTER PRODUCING HYDROCARBON FROM SAID FORMATION.
Claim 2
Dependent Claim
71 words
IN THE PRODUCTION OF PETROLEUM HYDROCARBON BY MEANS OF A PRODUCING WELL EXTENDING INTO A POROUS, SUBSURFACE, OIL-BEARING FORMATION CONTAINING CONNATE FORMATION WATER, WHICH WETS THE SURFACES OF THE FORMATION AND IS HELD THEREIN BY CAPILLARY EFFECT, RENDERING THE FORMATION ABOUT THE WELL BORE PREFERENTIALLY OIL WETTABLE AND WATER REPELLENT BY CONTACTING THE FORMATION ABOUT THE WELL BORE WITH A SALT OF ROSIN AMINE, AND THEREAFTER PRODUCING HYDROCARBON FROM SAID 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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |