US3746094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkeneoxide and polysaccharide gum derivatives mobility control agent and process
Assignee: Marathon Oil Co
•
Filing: 1971-04-12
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Granted: 1973-07-17
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Expires: 1991-04-12
Abstract
Abstract Flow resistance of aqueous polyalkeneoxide solutions, e.g., Polyox WRS-301, can be increased by adding high molecular weight polysaccharide gum derivative, e.g., Xanthan gums such as Kelzan (XC).* (*Kelzan (XC) is supplied by the Kelco Company, 3501 West Alabama Street, Houston, Texas, 77027.
Inventors
- 👤 C Norton
- 👤 D Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
A process according to claim 1 wherein the solution of polyethylene oxide is about 100 to about 10,000 parts per million and polysaccharide gum derivatives is about 200 to about 2000 parts per million.
Claim 2
Dependent Claim
23 words
Process according to claim 1 wherein the polysaccharide gum derivative has a molecular weight above 100,000 prior to co-mixing with the polyethyleneoxide polymer.
Claim 3
Dependent Claim
28 words
Process according to claim 1 wherein the polysaccharide gum derivative has a molecular weight of from 1,000,000 to about 10, 000,000 prior to addition to the polyethyleneoxide polymer.
Claim 4
Dependent Claim
33 words
Process according to claim 1 wherein the polysaccharide gum derivative 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.
References Cited (Backward Citations)
US3208518A
Cited
US3618664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |