US3684014A
Expired / Lapsed
US
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Polyacrylamide-polyalkeneoxide mobility control process
Assignee: CHARLES J NORTON
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Filing: 1970-10-29
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Granted: 1972-08-15
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Expires: 1990-10-29
Abstract
Abstract Improved viscosity, resistance factors, and mobility control of aqueous polyelectrolyte solutions are obtained by incorporating synergistic amounts of polymers containing non-polyelectrolyte, example of such a solution is 400 ppm of partially hydrolyzed polyacrylamide and 100 ppm of polyethylene oxides.
Inventors
- 👤 Charles J Norton
- 👤 David O Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:08
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/588; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
A process according to claim 1 wherein the aqueous solution is about 0.001 to about 10 percent by weight of a permeability reducing water soluble polyelectrolyte and 0.001 to about 10 weight per cent polyalkeneoxide based on the total solution.
Claim 2
Dependent Claim
36 words
A process according to claim 1 wherein the aqueous solution is about 0.001 to about 10 percent by weight of a polyacrylamide and 0.001 to about 10 weight per cent polyalkeneoxide based on the total solution.
Claim 3
Dependent Claim
23 words
A process according to claim 4 wherein the polyalkeneoxide polymer has a molecular weight above 100,000 prior to co-mixing with said polyacrylamide polymer.
Claim 4
Dependent Claim
29 words
A process according to claim 4 wherein the polyalkeneoxide has a molecular weight of from 1 million to about 10 million prior to the addition of the polyacrylamide polymer.
Claim 5
Dependent Claim
34 words
A process according to claim 4 wherein the polyalkeneoxide polymer is present in a concentration of from about 0.01 to about 1.0 per cent by weight based on the weight of the total solution.
Claim 6
Dependent Claim
45 words
A process according to claim 4 wherein the polyalkeneoxide comprises groups containing the structure: wherein R'', R'''', R'''''', and R'''''''' may be the same or different and are each selected from the group consisting of hydrogen, alkyl, and containing from one to 20 carbon atoms.
Claim 7
Dependent Claim
26 words
The compositions of claim 7 wherein R'', R'''', R'''''', and R'''''''' each contain from one to six carbon atoms, the balance of the substituents being hydrogen.
Claim 8
Dependent Claim
24 words
A process according to claim 4 wherein the polyacrylamide has a molecular weight in the range of from about 100,000 to about 100 million.
Claim 9
Dependent Claim
35 words
A process according to claim 4 wherein the partially hydrolyzed polyacrylamide polymer is present in a concentration of from about 0.01 to about 1.0 percenT by weight based on the weight of the total solution.
Claim 10
Dependent Claim
52 words
A process for the displacement of oil in oil-bearing formation comprising injecting into said formation an aqueous composition comprising solutions of 1 - 250 parts per million of polyalkeneoxide and 250 - 500 parts per million of polyacrylamide, said solution being injected in the range of 0.30 to about 1.00 pore volume.
Claim 11
Dependent Claim
22 words
In a process according to claim 11 wherein said solution is injected in the range of 0.4 to about 0.9 pore volume.
Claim 12
Dependent Claim
62 words
A process for the displacement of oil in oil-bearing formations comprising injecting into said formation an aqueous solution comprising about 0.001 to about 10 percent by weight of a permeability reducing water-soluble polyelectrolyte and 0.001 to about 10 percent viscosity increasing water-soluble non-polyelectrolyte wherein said non-polyelectrolyte comprises polyalkaleneoxide having a molecular weight in the range of from about 104 to about 108.
Claim 13
Dependent Claim
30 words
A process according to claim 13 wherein the said permeability reducing water-soluble polyelectrolyte comprises partially hydrolyzed polyacrylamide having a molecular weight in the range of from 0.1 to 100 million.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |