US4268403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil recovery using a dimethylamide in a fluid carrier
Assignee: Buckman Laboratories International Inc
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Filing: 1979-10-25
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Granted: 1981-05-19
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Expires: 1999-10-25
Abstract
Abstract A method for recovering oil from an oil-bearing formation which comprises introducing into said formation to induce displacement of the oil contained therein, a fluid carrier containing from about 0.25 to about 100 parts by weight of a N,N-dimethylamide of a straight chain carboxylic acid per million parts of said fluid carrier, characterized in that said carboxylic acid contains from 12 to 18 carbon atoms. In addition, this invention encompasses the extraction of oil from mining oil sand operations which comprises the addition and then mixing into said sand to induce displacement of the oil contained thereon, a fluid carrier containing the N,N-dimethylamide.
Inventors
- 👤 Robert H. Buckman
- 👤 Peter J. Young
- 👤 Miguel L. Pulido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/592; C09K8/584; E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
90 words
A method for recovering oil from an oil-bearing formation which comprises introducing into said formation to displace the oil contained therein a fluid carrier wherein said fluid carrier is water, steam, or a hydrocarbon fluid selected from the group consisting of light distillate, naphtha, reformate, pale oil, toluene, and diesel fuel containing from about 0.25 to about 100 parts by weight of an N,N-dimethylamide of a straight chain carboxylic acid per million parts of said fluid carrier, characterized in that said carboxylic acid contains from 12 to 18 carbon atoms.
Claim 2
Independent Claim
90 words
A method for recovering oil from an oil-bearing formation which comprises introducing into said formation to displace the oil contained therein a fluid carrier wherein said fluid carrier is water, steam, or a hydrocarbon fluid selected from the group consisting of light distillate, naphtha, reformate, pale oil, toluene, and diesel fuel containing from about 0.25 to about 100 parts by weight of an N,N-dimethylamide of a straight chain carboxylic acid per million parts of said fluid carrier, characterized in that said carboxylic acid contains from 12 to 18 carbon atoms.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the fluid carrier is steam.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the fluid carrier is water.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the fluid carrier is a hydrocarbon fluid.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is lauric acid.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is myristic acid.
Claim 8
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is palmitic acid.
Claim 9
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is linoleic acid.
Claim 10
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is linolenic acid.
Claim 11
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is oleic acid.
Claim 12
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is ricinoleic acid.
Claim 13
Dependent Claim
14 words
The method of claim 1 wherein the straight chain carboxylic acid is stearic acid.
Claim 14
Dependent Claim
32 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of straight chain carboxylic acids containing 18 carbon atoms and at least one carbon to carbon double bond.
Claim 15
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from tall oil.
Claim 16
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from linseed oil.
Claim 17
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from soybean oil.
Claim 18
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from cottonseed oil.
Claim 19
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from corn oil.
Claim 20
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from peanut oil.
Claim 21
Dependent Claim
20 words
The method of claim 1 wherein the straight chain carboxylic acid is a mixture of acids derived from coconut oil.
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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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |