US3919092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkeneoxide and polysaccharide gum derivatives mobility control agent and process
Assignee: Marathon Oil Co
•
Filing: 1973-02-26
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Granted: 1975-11-11
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Expires: 1993-02-26
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
- 👤 Charles J Norton
- 👤 David D Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:34
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/588; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
COMPOSITIONS CONSISTING ESSENTIALLY OF AQUEOUS SOLUTIONS OF ABOUT 1 TO ABOUT 5000 PARTS PER MILLION OF WATER SOLUBLE POLYETHYLENE OXIDE HAVING MOLECULAR WEIGHTS IN THE RANGE OF FROM ABOUT 105 TO ABOUT 106 AND ABOUT 1 TO ABOUT 5000 PARTS PER MILLION OF WATER SOLUBLE POLYSACCHARIDE GUM DERIVATIVES
Claim 2
Dependent Claim
48 words
COMPOSITIONS CONSISTING ESSENTIALLY OF AQUEOUS SOLUTIONS OF ABOUT 1 TO ABOUT 5000 PARTS PER MILLION OF WATER SOLUBLE POLYETHYLENE OXIDE HAVING MOLECULAR WEIGHTS IN THE RANGE OF FROM ABOUT 105 TO ABOUT 106 AND ABOUT 1 TO ABOUT 5000 PARTS PER MILLION OF WATER SOLUBLE POLYSACCHARIDE GUM DERIVATIVES
Claim 3
Dependent Claim
25 words
Compositions according to claim 1 wherein a polyethylene oxide polymer has a molecular weight above 100,000 prior to the addition of said polysaccharide gum derivative.
Claim 4
Dependent Claim
29 words
Compositions according to claim 1 wherein said polyethylene oxide polymer has a concentration of 0.01 to about 1 percent by weight based on the weight of the total solution.
Claim 5
Dependent Claim
24 words
Compositions according to claim 1 wherein the polysaccharide gum derivative has a molecular weight in the range of from about 100,000 to about 100,000,000.
Claim 6
Dependent Claim
18 words
Compositions according to claim 1 wherein the polysaccharide gum derivative is a xanthan gum such as Kelzen (XC).
References Cited (Backward Citations)
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |