US4466891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glyceryl ether sulfonates for use in oil recovery fluids and processes
Assignee: Texaco Inc
•
Filing: 1982-07-02
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Granted: 1984-08-21
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Expires: 2002-07-02
Abstract
Abstract Petroleum may be recovered from petroleum containing formations having high salinity by injecting into the formation an aqueous fluid containing an effective amount of a surface active agent characterized by the formula: R.sub.1 (OCH.sub.2 CH(OH)CH.sub.2).sub.m (R.sub.2).sub.n OR.sub.3 SO.sub.3 X wherein R 1 is an alkyl or alkylaryl radical, m is an integer of from 1 to 10, R 2 is an ethoxy radical and/or 1,2-propoxy radical, n is an integer of from 0 to 10, R 3 is an ethylene or 1,3-propylene radical, X is a sodium, potassium or ammonium cation; and driving the fluid through the formation and thereby displacing and recovering petroleum from the formation.
Inventors
- 👤 David R. McCoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:45
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
147 words
A process for recovering petroleum from a subterranean, petroleum-containing formation penetrated by an injection well and a production well which comprises: (A) injecting into the formation via the injection well an aqueous fluid comprising water having dissolved therein an effective amount of a surface active agent characterized by the formula: R.sub.1 (OCH.sub.2 CH(OH)CH.sub.2).sub.m (R.sub.2).sub.n OR.sub.3 SO.sub.3 X wherein R 1 is a linear or branched alkyl radical or mono- or poly-alkyl substituted benzene radical containing from 8 to 24 carbon atoms; m is an integer of from 1 to 10; R 2 is an ethoxy radical, a 1,2-propoxy radical or an ethoxy and 1,2-propoxy radical; n is an integer of from 0 to 10; R 3 is an ethylene or 1,3-propylene radical; and X is a sodium, potassium or ammonium cation; and (B) forcing the fluid through the formation; and (C) recovering petroleum through the production well.
Claim 2
Dependent Claim
147 words
A process for recovering petroleum from a subterranean, petroleum-containing formation penetrated by an injection well and a production well which comprises: (A) injecting into the formation via the injection well an aqueous fluid comprising water having dissolved therein an effective amount of a surface active agent characterized by the formula: R.sub.1 (OCH.sub.2 CH(OH)CH.sub.2).sub.m (R.sub.2).sub.n OR.sub.3 SO.sub.3 X wherein R 1 is a linear or branched alkyl radical or mono- or poly-alkyl substituted benzene radical containing from 8 to 24 carbon atoms; m is an integer of from 1 to 10; R 2 is an ethoxy radical, a 1,2-propoxy radical or an ethoxy and 1,2-propoxy radical; n is an integer of from 0 to 10; R 3 is an ethylene or 1,3-propylene radical; and X is a sodium, potassium or ammonium cation; and (B) forcing the fluid through the formation; and (C) recovering petroleum through the production well.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein R 1 is a mono-alkyl substituted benzene radical containing from 12 to 20 carbon atoms.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein m is an integer of from 2 to 5.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein R 2 is an ethoxy radical.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein n is an integer of from 2 to 10.
Claim 7
Dependent Claim
15 words
The process of claim 1 where n is an integer of from 3 to 5.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein X is a sodium cation.
Claim 9
Dependent Claim
10 words
The process of claim 1 wherein the fluid contains brine.
Claim 10
Dependent Claim
117 words
An aqueous brine fluid comprising: (a) about 0.1 wt. % to about 2 wt. % of a material of the formula: R.sub.1 (OCH.sub.2 CH(OH)CH.sub.2).sub.m (R.sub.2).sub.n OR.sub.3 SO.sub.3 X wherein R 1 is a linear or branched alkyl radical or mono- or poly-alkyl substituted benzene radical containing from 8 to 24 carbon atoms; m is an integer of from 1 to 10; R 2 is an ethoxy radical, a 1,2-propoxy radical or an ethoxy and 1,2-propoxy radical; n is an integer of from 0 to 10; R 3 is an ethylene or 1,3-propylene radical, and X is a sodium, potassium or ammonium cation; and (b) about 0.1 wt. % to about 4 wt. % of a petroleum sulfonate.
Claim 11
Dependent Claim
117 words
An aqueous brine fluid comprising: (a) about 0.1 wt. % to about 2 wt. % of a material of the formula: R.sub.1 (OCH.sub.2 CH(OH)CH.sub.2).sub.m (R.sub.2).sub.n OR.sub.3 SO.sub.3 X wherein R 1 is a linear or branched alkyl radical or mono- or poly-alkyl substituted benzene radical containing from 8 to 24 carbon atoms; m is an integer of from 1 to 10; R 2 is an ethoxy radical, a 1,2-propoxy radical or an ethoxy and 1,2-propoxy radical; n is an integer of from 0 to 10; R 3 is an ethylene or 1,3-propylene radical, and X is a sodium, potassium or ammonium cation; and (b) about 0.1 wt. % to about 4 wt. % of a petroleum sulfonate.
Claim 12
Dependent Claim
21 words
The fluid of claim 9 wherein R 1 is a mono-alkyl substituted benzene radical containing from 12 to 20 carbon atoms.
Claim 13
Dependent Claim
15 words
The fluid of claim 9 wherein m is an integer of from 2 to 5.
Claim 14
Dependent Claim
12 words
The fluid of claim 9 wherein R 2 is an ethoxy radical.
Claim 15
Dependent Claim
15 words
The fluid of claim 9 wherein n is an integer of from 2 to 10.
Claim 16
Dependent Claim
15 words
The fluid of claim 9 wherein n is an integer of from 3 to 5.
Claim 17
Dependent Claim
11 words
The fluid of claim 9 wherein X is a sodium cation.
Claim 18
Dependent Claim
22 words
The fluid of claim 9 wherein the petroleum sulfonate has a molecule weight in the range of about 350 to about 500.
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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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |