US4533478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-Sulfoxy-1,2-propylene glycols-1-esters of tricyclo (4.2.2.02,5) dec-9-ene-3,4,7,8-tetracarboxylic acid
Assignee: BP Corp North America Inc
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Filing: 1984-10-11
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Granted: 1985-08-06
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Expires: 2004-10-11
Abstract
Abstract 3-Sulfoxy-1,2-propylene glycols-1-esters of tricyclo (4.2.2.0 2 ,5) dec-9-ene-3,4,7,8-tetracarboxylic acid are prepared. These compounds are useful as surfactants, biocides and as cosurfactants in enhanced oil recovery.
Inventors
- 👤 Ellis K. Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:43
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; C07; C07C; C07C69/00; C07C69/608; A; A01; A01N; A01N37/00; A01N37/06; B; B01; B01F; B01F23/00; B01F23/40; B01F23/41; C09K8/60; C09K8/602; C09K8/62; C09K8/66; C09K8/68; C09K2208/00; C09K2208/30; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936; Y10S507/937; Y10S507/938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A method of injecting a micellar slug into a subterranean formation comprising the steps of: (1) contacting said formation with an aqueous fluid composition comprising water, a surfactant, a hydrocarbon, an electrolyte and a cosurfactant comprising 3-sulfoxy-1,2-propylene glycols-1-esters of tricyclo (4.2.2.0 2 ,5) dec-9-ene-3,4,7,8-tetracarboxylic acid of molecular weight of from about 400 to about 1200, (2) applying sufficient pressure to said composition to cause said micellar slug to move through said formation, (3) maintaining sufficient pressure while injecting said composition into said formation.
Claim 2
Independent Claim
83 words
A method of injecting a micellar slug into a subterranean formation comprising the steps of: (1) contacting said formation with an aqueous fluid composition comprising water, a surfactant, a hydrocarbon, an electrolyte and a cosurfactant comprising 3-sulfoxy-1,2-propylene glycols-1-esters of tricyclo (4.2.2.0 2 ,5) dec-9-ene-3,4,7,8-tetracarboxylic acid of molecular weight of from about 400 to about 1200, (2) applying sufficient pressure to said composition to cause said micellar slug to move through said formation, (3) maintaining sufficient pressure while injecting said composition into said formation.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |