Patent US3565176A successfully refreshed from Google Patents.
US3565176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consolidation of earth formation using epoxy-modified resins
Assignee: Individual
•
Filing: 1969-09-08
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Granted: 1971-02-23
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Expires: 1989-09-08
Abstract
Abstract A method of consolidating an unconsolidated earth formation on order to improve subsequent oil recovery by means of a fluid drive, comprising treating the formation with (1) a liquid hydrocarbon preflush, (2) a resinous solution containing an epoxy resin forming material, an amine curing agent, an organic ester of a pentavalent phosphorus compound coupling agent and, if desired, optimally adding a silane, said additives being dispersed or dissolved in a liquid solvent and (3) and optimally if desired using an overflush comprising of a hydrocarbon liquid.
Inventors
- 👤 Clifford V Wittenwyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:36
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/56
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
The process of claim 1 wherein the preflush liquid (a) is a mixture of diesel oil and isopropyl alcohol the solvent (b) is a polar-containing solvent, the curing agent is an aromatic amine and the phosphate ester is a triaryl phosphate.
Claim 2
Dependent Claim
12 words
The process of claim 2 wherein the triaryl phosphate is triphenyl phosphate.
Claim 3
Dependent Claim
18 words
The process of claim 3 wherein after the formation is consolidated it is water flooded to recover oil.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein after the formation is consolidated it is water flooded to recover oil.
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |