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US3587742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consolidation of shallow formations with acid modified epoxy resinous material
Assignee: Shell USA Inc
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Filing: 1969-09-08
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Granted: 1971-06-28
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Expires: 1989-09-08
Abstract
Abstract A METHOD OF CONSOLIDATING A SHALLOW, LOW TEMPERATURE UNCONSOLIDATED EARTH FORMATION IN ORDER TO IMPROVE SUBSEQUENT OIL RECOVERLY BY MEANS OF A FLUID DRIVE, COMPRISING TREATING THE FORMATION WITH (1) A HYDROCARBON PREFLUSH, (2) A RESINOUS SOLUTION CONTAINING AN EPOXY RESIN FROMING MATERIAL, AN AMINE CURING AGENT, AN ORGANIC PHOSPHATE AND/OR SILANE COUPLING AGENT AND AS AN ACCELERATOR A POLAR-SUBSTITUTED CARBOXYLIC ACID, E.G., A HYDROXY CONTAINING CARBOXYLIC ACID, SAID ADDITIVE MIXTURE BEING DISPERSED OR DISSOLVED IN A POLAR-CONTAINING SOLVENT AND (3) AN OVERFLUSH COMPRISING OF A HYDROCARBON LIQUID.
Inventors
- 👤 Clifford V Wittenwyler
- 👤 Robert S Forrest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:27
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/502
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |