Patent US4089803A successfully refreshed from Google Patents.
US4089803A
Expired / Lapsed
US
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Demulsification of surfactant-petroleum-water flood emulsions
Assignee: Baker Petrolite LLC
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Filing: 1976-08-12
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Granted: 1978-05-16
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Expires: 1996-08-12
Abstract
Abstract This invention relates to the demulsification of surfactant petroleum water flood emulsions which comprises treating such emulsions with a demulsifier in conjunction with an amine, preferably a polyalkylenepolyamine.
Inventors
- 👤 Donald U. Bessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:16
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/047; C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; C09K8/60; C09K8/602
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
66 words
A composition for demulsification of surfactant-petroleum-water flood emulsions comprising an oxyalkylated phenol-aldehyde resin and an amine selected from the group consisting of polyalkylene polyamines of the general formula ##STR5## where A is (CH 2 ) x where x is 2 to 10 and n is a number from 1 to 10 and alkanolamines, the weight ratio of resin to amine varying from about 1 to 90.
Claim 2
Dependent Claim
66 words
A composition for demulsification of surfactant-petroleum-water flood emulsions comprising an oxyalkylated phenol-aldehyde resin and an amine selected from the group consisting of polyalkylene polyamines of the general formula ##STR5## where A is (CH 2 ) x where x is 2 to 10 and n is a number from 1 to 10 and alkanolamines, the weight ratio of resin to amine varying from about 1 to 90.
Claim 3
Dependent Claim
13 words
The composition of claim 1 where the resin is an oxyalkylated phenol-formaldehyde resin.
Claim 4
Dependent Claim
20 words
The composition of claim 2 where the resin and amine are present in an amount of 60% to 40% amine.
Claim 5
Dependent Claim
11 words
The composition of claim 3 where the amine is pentaethylene hexamine.
Claim 6
Dependent Claim
17 words
The composition of claim 4 where the oxyalkylated phenol-formaldehyde resin has alkyl groups of from 4-9 carbons.
Claim 7
Dependent Claim
12 words
The composition of claim 2 where the amine is an alkanol amine.
Claim 8
Dependent Claim
12 words
The composition of claim 6 where the alkanol amine is triethanol amine.
Claim 9
Dependent Claim
44 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 1 in a concentration of 12 to 1000 parts resin per million parts emulsion and 8 to 1000 parts amine per million parts emulsion.
Claim 10
Dependent Claim
21 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 2.
Claim 11
Dependent Claim
21 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 3.
Claim 12
Dependent Claim
21 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 4.
Claim 13
Dependent Claim
21 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 5.
Claim 14
Dependent Claim
21 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 6.
Claim 15
Dependent Claim
21 words
A process of resolving emulsion formed during surfactant water flooding which comprises treating said emulsion with the composition of claim 7.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |