Patent US2295496A successfully refreshed from Google Patents.
Patent US3847823A successfully refreshed from Google Patents.
US3847823A
Expired / Lapsed
US
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Overbased high plus low molecular weight sulfonate waterflood additive
Assignee: ConocoPhillips Co
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Filing: 1973-02-26
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Granted: 1974-11-12
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Expires: 1993-02-26
Abstract
Abstract 1. A COMPOSITION COMPRISING AN OVERBASED MIXTURE COMPRISING A WATER-SOLUBLE ALKALI METAL HYDROCARBON SULFONATE PLUS AN OIL-SOLUBLE ALKALI METAL HYDROCARBON SULFONATE PLUS A BASE COMPONENT WHICH IS AN ALKALI METAL HYDROXIDE; THE ANIONIC WATERFLOOD ADDITIVE BEING SUFFICIENTLY OVERBASED THAT THE RATIO: "WEIGHT OF EXCESS BASE COMPONENT/WEIGHT OF SULFONATE" IS ABOUT 0.03 TO ABOUT 2.0.
Inventors
- 👤 C Clark
- 👤 M Gregory
- 👤 O Kerfoot
- 👤 C Kennedy
- 👤 F Veatch
- 👤 D Krehbiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:06
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A COMPOSITION COMPRISING AN OVERBASED MIXTURE COMPRISING A WATER-SOLUBLE ALKALI METAL HYDROCARBON SULFONATE PLUS AN OIL-SOLUBLE ALKALI METAL HYDROCARBON SULFONATE PLUS A BASE COMPONENT WHICH IS AN ALKALI METAL HYDROXIDE; THE ANIONIC WATERFLOOD ADDITIVE BEING SUFFICIENTLY OVERBASED THAT THE RATIO: "WEIGHT OF EXCESS BASE COMPONENT/WEIGHT OF SULFONATE" IS ABOUT 0.03 TO ABOUT 2.0.
Claim 2
Dependent Claim
53 words
A COMPOSITION COMPRISING AN OVERBASED MIXTURE COMPRISING A WATER-SOLUBLE ALKALI METAL HYDROCARBON SULFONATE PLUS AN OIL-SOLUBLE ALKALI METAL HYDROCARBON SULFONATE PLUS A BASE COMPONENT WHICH IS AN ALKALI METAL HYDROXIDE; THE ANIONIC WATERFLOOD ADDITIVE BEING SUFFICIENTLY OVERBASED THAT THE RATIO: "WEIGHT OF EXCESS BASE COMPONENT/WEIGHT OF SULFONATE" IS ABOUT 0.03 TO ABOUT 2.0.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |