Patent US2069150A successfully refreshed from Google Patents.
US2717876A
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Acidizing wells
Assignee: Individual
•
Filing: 1950-10-02
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Granted: 1955-09-13
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Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 Paul L Menaul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:18
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74; C09K8/78; Y; Y10; Y10S; Y10S507/00; Y10S507/933; Y10S507/934
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
A WELL TREATING FLUID FOR ACIDIZING CALCAREOUS FORMATIONS CONTAINING CLAYEY MATERIAL COMPRISING AN ACID CAPABLE OF FORMING A WATER-SOLUBLE SALT SOLUTION BY REACTION WITH SAID CALCAREOUS FORMATION AND POLYETHYLENE GLYCOL ESTER OF ABIETIC ACID IN WHICH SAID ESTER CONTAINS AT LEAST 20 MOL. WEIGHTS OF ETHYLENE OXIDE RADICALS PER MOL. WEIGHT OF ABIETIC ACID, THE CONCENTRATION OF SAID ESTER IN SAID ACID BEING SUFFICIENT TO SUSPEND SAID CLAYEY MATERIAL IN SAID SOLUTION.
References Cited (Backward Citations)
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US2356205A
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |