Patent US3305019A successfully refreshed from Google Patents.
US3305019A
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Process for stimulating gas wells
Assignee: Dow Chemical Co
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Filing: 1965-01-29
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Granted: 1967-02-21
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Expires: 1985-01-29
Abstract
No abstract record available.
Inventors
- 👤 Melvin F Katzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:48
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/882; Y; Y10; Y10S; Y10S507/00; Y10S507/902; Y10S507/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR STIMULATING A GAS WELL WHICH COMPRISES ADDING TO THE WELL AS A SOLID UNIT A WATER-SOLUBLE COMPOSITION COMPRISING FROM 20 TO 70 WEIGHT PERCENT OF A WATER-SOLUBLE, HIGH MOLECULAR WEIGHT ANIONIC ACRYLAMIDE POLYMER IN A WATER-SOLUBLE MATRIX, THEREBY MODIFYING THE PROPERTIES OF THE WELL-BOTTOM SAND AND REDUCING ITS INTERFERENCE WITH THE GAS FLOW.
Claim 2
Dependent Claim
56 words
A PROCESS FOR STIMULATING A GAS WELL WHICH COMPRISES ADDING TO THE WELL AS A SOLID UNIT A WATER-SOLUBLE COMPOSITION COMPRISING FROM 20 TO 70 WEIGHT PERCENT OF A WATER-SOLUBLE, HIGH MOLECULAR WEIGHT ANIONIC ACRYLAMIDE POLYMER IN A WATER-SOLUBLE MATRIX, THEREBY MODIFYING THE PROPERTIES OF THE WELL-BOTTOM SAND AND REDUCING ITS INTERFERENCE WITH THE GAS FLOW.
References Cited (Backward Citations)
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US3122203A
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US3076508A
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US3155178A
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |