US3122204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A method for acidizing wells and composition therefor
Assignee: Monsanto Chemicals Ltd
•
Filing: 1960-04-19
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Granted: 1964-02-25
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Expires: 1980-04-19
Abstract
No abstract record available.
Inventors
- 👤 David T Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:42
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74; Y; Y10; Y10S; Y10S507/00; Y10S507/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A METHOD FOR ACIDIZING A FORMATION CONTAINING SILICEOUS MATERIALS CAPABLE OF SWELLING IN THE PRESENCE OF A SPENT ACID, THE STEP WHICH COMPRISES INJECTING INTO THE EARTH FORMATION AN AQUEOUS ACID SOLUTION CAPABLE OF ATTACKING AND DISSOLVING SAID EARTH FORMATION HAVING DISPERSED THEREIN 0.5 TO 50 WEIGHT PERCENT OF AN ALDEHYDE SILICATE-SWELLING CONTROL AGENT.
Claim 2
Dependent Claim
55 words
IN A METHOD FOR ACIDIZING A FORMATION CONTAINING SILICEOUS MATERIALS CAPABLE OF SWELLING IN THE PRESENCE OF A SPENT ACID, THE STEP WHICH COMPRISES INJECTING INTO THE EARTH FORMATION AN AQUEOUS ACID SOLUTION CAPABLE OF ATTACKING AND DISSOLVING SAID EARTH FORMATION HAVING DISPERSED THEREIN 0.5 TO 50 WEIGHT PERCENT OF AN ALDEHYDE SILICATE-SWELLING CONTROL AGENT.
References Cited (Backward Citations)
US2124530A
Cited
US2640810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |