US2714929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective plugging in oil wells
Assignee: Union Oil Company of California
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Filing: 1954-04-26
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Granted: 1955-08-09
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Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Nowak
- 👤 Paul W Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:08
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE METHOD OF SELECTIVELY PLUGGING OIL- AND WATERPRODUCING FORMATIONS PENETRATED BY A WELL BORE TO DECREASE THE PRODUCTION OF WATER THEREFROM WHICH COMPRISES FORCING INTO SAID FORMATIONS AN OIL-MISCIBLE WATERIMMISCIBLE FIRST LIQUID WHICH IS CAPABLE OF REACTING WITH A WATER-MISCIBLE OIL-IMMISCIBLE SECOND LIQUID UNDER THE CONDITIONS OF TEMPERATURE AND PRESSURE PREVAILING IN SAID FORMATIONS TO FORM A SUBSTANTIALLY WATER-INSOLUBLE SOLID, ALLOWING SAID FORMATIONS TO PRODUCE UNTIL THE EFFLUENT THEREFROM IS SUBSTANTIALLY FREE FROM THE INJECTED FIRST LIQUID, FORCING SAID WATER-IMMISCIBLE OIL-IMMISCIBLE SECOND LIQUID INTO SAID FORMATIONS, AND HOLDING SAID SECOND LIQUID WITHIN SAID FORMATIONS UNTIL SAID SUBSTANTIALLY WATERINSOLUBLE SOLID IS FORMED WITHIN SAID WATER-PRODUCING FORMATIONS BY REACTION BETWEEN SAID SECOND LIQUID AND SAID FIRST LIQUID RETAINED IN SAID WATER-PRODUCING FORMATIONS AS RESIDUAL SATURATION.
Claim 2
Independent Claim
123 words
THE METHOD OF SELECTIVELY PLUGGING OIL- AND WATERPRODUCING FORMATIONS PENETRATED BY A WELL BORE TO DECREASE THE PRODUCTION OF WATER THEREFROM WHICH COMPRISES FORCING INTO SAID FORMATIONS AN OIL-MISCIBLE WATERIMMISCIBLE FIRST LIQUID WHICH IS CAPABLE OF REACTING WITH A WATER-MISCIBLE OIL-IMMISCIBLE SECOND LIQUID UNDER THE CONDITIONS OF TEMPERATURE AND PRESSURE PREVAILING IN SAID FORMATIONS TO FORM A SUBSTANTIALLY WATER-INSOLUBLE SOLID, ALLOWING SAID FORMATIONS TO PRODUCE UNTIL THE EFFLUENT THEREFROM IS SUBSTANTIALLY FREE FROM THE INJECTED FIRST LIQUID, FORCING SAID WATER-IMMISCIBLE OIL-IMMISCIBLE SECOND LIQUID INTO SAID FORMATIONS, AND HOLDING SAID SECOND LIQUID WITHIN SAID FORMATIONS UNTIL SAID SUBSTANTIALLY WATERINSOLUBLE SOLID IS FORMED WITHIN SAID WATER-PRODUCING FORMATIONS BY REACTION BETWEEN SAID SECOND LIQUID AND SAID FIRST LIQUID RETAINED IN SAID WATER-PRODUCING FORMATIONS AS RESIDUAL SATURATION.
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) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |