US2873250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for plugging highly permeable formations
Assignee: Pan American Petroleum Corp
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Filing: 1953-12-28
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Granted: 1959-02-10
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Platho P Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:26
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/516; C09K2208/00; C09K2208/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A COMPOSITION FOR TEMPORARILY PLUGGING HIGHLY PERMEABLE ZONES PENETRATED BY A WELL COMPRISING FROM ABOUT 1 TO ABOUT 3 PARTS OF A GRANULAR SYNTHETIC HYDROCARBON RESIN HAVING A GRADATION OF PARTICLES THROUGHOUT THE RANGE 10-00 MESH ABOUT 1 PART OF A STRONG BODY GRANULAR MATERIAL HAVING A GRADATION OF PARTICLES THROUGHOUT THE RANGE 4-10 MESH, SAID SYNTHETIC HYDROCARBON RESIN BEING SUBSTANTIALLY COMPLETELY SOLUBLE IN C10-C12 PARAFFINIC HYDROCARBONS WHEREBY THE IMPERMEABLE PLUG PRODUCED WITH SAID COMPOSITION MAY BE PERMEABILIZED BY FLOWING PETROLEUM HYDROCARBONS THERETHROUGH.
Claim 2
Dependent Claim
83 words
A COMPOSITION FOR TEMPORARILY PLUGGING HIGHLY PERMEABLE ZONES PENETRATED BY A WELL COMPRISING FROM ABOUT 1 TO ABOUT 3 PARTS OF A GRANULAR SYNTHETIC HYDROCARBON RESIN HAVING A GRADATION OF PARTICLES THROUGHOUT THE RANGE 10-00 MESH ABOUT 1 PART OF A STRONG BODY GRANULAR MATERIAL HAVING A GRADATION OF PARTICLES THROUGHOUT THE RANGE 4-10 MESH, SAID SYNTHETIC HYDROCARBON RESIN BEING SUBSTANTIALLY COMPLETELY SOLUBLE IN C10-C12 PARAFFINIC HYDROCARBONS WHEREBY THE IMPERMEABLE PLUG PRODUCED WITH SAID COMPOSITION MAY BE PERMEABILIZED BY FLOWING PETROLEUM HYDROCARBONS THERETHROUGH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |