US4799549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gel-forming aqueous microemulsions for soil stabilization
Assignee: Rhone Poulenc Specialites Chimiques
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Filing: 1986-02-13
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Granted: 1989-01-24
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Expires: 2006-02-13
Abstract
Abstract Stable, gel-forming aqueous microemulsions, well adopted for the reversible stabilization or plugging of soil/rock formations, e.g., subterranean well formations, are comprised of (i) an aqueous solution of a water-soluble alkali metal silicate, (ii) a gelling reagent therefor, and (iii) at least one surface active agent.
Inventors
- 👤 Bernard Vinot
- 👤 Gerard Berrod
- 👤 Jean-Louis Brun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:34
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/845; C09K17/00; C09K17/40; C09K17/48; C09K8/50; C09K8/504; C09K8/5045; Y; Y10; Y10S; Y10S106/00; Y10S106/90; Y10S516/00; Y10S516/902
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
A stable, gel-forming composition of matter adopted for reversible soil stabilization, comprising an aqueous microemulsions of (i) an aqueous phase comprising an aqueous solution of a water-soluble alkali metal silicate, (ii) an organic phase comprising a gelling reagent therefor, said gelling reagent comprising an alkyl ester of a saturated or unsaturated aliphatic mono-, di- or polycarboxylic acid, an alkyl ester of a carbocyclic carboxylic acid, a dialkyl and/or trialkyl phosphate, a lactone, a lower alkylamide, or a ketoester, and (iii) at least one surface active agent for preparing the microemulsion of the organic phase and the aqueous phase.
Claim 2
Dependent Claim
98 words
A stable, gel-forming composition of matter adopted for reversible soil stabilization, comprising an aqueous microemulsions of (i) an aqueous phase comprising an aqueous solution of a water-soluble alkali metal silicate, (ii) an organic phase comprising a gelling reagent therefor, said gelling reagent comprising an alkyl ester of a saturated or unsaturated aliphatic mono-, di- or polycarboxylic acid, an alkyl ester of a carbocyclic carboxylic acid, a dialkyl and/or trialkyl phosphate, a lactone, a lower alkylamide, or a ketoester, and (iii) at least one surface active agent for preparing the microemulsion of the organic phase and the aqueous phase.
Claim 3
Dependent Claim
39 words
The composition of matter as defined by claim 1, said gelling reagent comprising an alkyl diester of a C 2 -C 10 dicarboxylic acid, or admixture thereof, the alkyl moiety of which having from 1 to 6 carbon atoms.
Claim 4
Dependent Claim
35 words
The composition of matter as defined by claim 1, said gelling reagent comprising an alkyl diester of a phthalic acid, or admixture thereof, the alkyl moiety of which having from 1 to 6 carbon atoms.
Claim 5
Dependent Claim
35 words
The composition of matter as defined by claim 1, said at least one surface active agent comprising admixture of an alkylsulfoester of a C 4 -C 30 carboxylic acid and an alkaline alkyl and/or alkenylsulfonate.
Claim 6
Dependent Claim
25 words
The composition of matter as defined by claim 4, said at least one surface active agent comprising admixture of sodium dihexylsulfosuccinate and sodium α-olefin sulfonate.
Claim 7
Dependent Claim
27 words
A method for the sealing/consolidation of a soil formation, comprising injecting therein the composition of matter as defined by claim 1 and permitting same to harden/hardening same.
Claim 8
Dependent Claim
14 words
The method as defined by claim 6, said soil formation comprising an oil well.
Claim 9
Dependent Claim
18 words
The method as defined by claim 6, further comprising disintegrating said hardened gel after predetermined period of time.
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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) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |