US3042610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidizing of wells
Assignee: ExxonMobil Oil Corp
•
Filing: 1959-03-04
•
Granted: 1962-07-03
•
Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Peggy M Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
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
102 words
IN A METHOD OF TREATING A WELL THE STEP WHICH COMPRISES INTRODUCING INTO SAID WELL A COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF ACID CONTAINING DISSOLVED THEREIN IN A CONCENTRATION BETWEEN ABOUT 2.8 AND ABOUT 3.5 MOLAR A WATER-SOLUBLE SALT OF CALCIUM AND IN A CONCENTRATION OF AT LEAST 0.1 PERCENT BY WEIGHT OF SAID AQUEOUS SOLUTION OF ACID A WATER-SOLUBLE ORGANIC COMPOUND POSSESSING SURFACE-ACTIVE PROPERTIES AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYOXYETHYL AMMONIUM CHLORIDE, DIDROABIETYL AMINE, COCOTRIMETHYL AMMONIUM CHLORIDE, DIN-BUTYL AMINE, POLYOXYETHYLENE ETHER OF NONYL PHENOL, POLYOXYETHYLENE EHTER OF DODECYL PHENOL, POLYETHYLAMINE ANILINE, PROPYK PYRIDINE, BUTYL PYRIDINE, AND AMYL PYRIDINE.
Claim 2
Dependent Claim
102 words
IN A METHOD OF TREATING A WELL THE STEP WHICH COMPRISES INTRODUCING INTO SAID WELL A COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF ACID CONTAINING DISSOLVED THEREIN IN A CONCENTRATION BETWEEN ABOUT 2.8 AND ABOUT 3.5 MOLAR A WATER-SOLUBLE SALT OF CALCIUM AND IN A CONCENTRATION OF AT LEAST 0.1 PERCENT BY WEIGHT OF SAID AQUEOUS SOLUTION OF ACID A WATER-SOLUBLE ORGANIC COMPOUND POSSESSING SURFACE-ACTIVE PROPERTIES AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYOXYETHYL AMMONIUM CHLORIDE, DIDROABIETYL AMINE, COCOTRIMETHYL AMMONIUM CHLORIDE, DIN-BUTYL AMINE, POLYOXYETHYLENE ETHER OF NONYL PHENOL, POLYOXYETHYLENE EHTER OF DODECYL PHENOL, POLYETHYLAMINE ANILINE, PROPYK PYRIDINE, BUTYL PYRIDINE, AND AMYL PYRIDINE.
References Cited (Backward Citations)
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US2281419A
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US2278838A
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US2778427A
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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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |