US2614982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of prevention of corrosion in wells
Assignee: Standard Oil Development Co
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Filing: 1950-04-03
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Granted: 1952-10-21
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Expires: 1970-04-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Caldwell
- 👤 Melba L Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/173; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/932; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD FOR REDUCING THE CORROSIVENESS TO CORRODIBLE FERROUS METAL OF A CORROSIVE PETROLIFEROUS WELL FLUID INCLUDING MOISTURE AND HYDROGEN SULFIDE WHICH COMPRISES INTRODUCING INTO SAID FLUID A CORROSION INHIBITING AMOUNT OF A REACTION PRODUCT OBTAINED BY REACTING A FATTY MATERIAL SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS HAVING AT LEAST 12 AND NO MORE THAN 26 CARBON ATOMS PER MOLECULE AND FATTY OILS CONTAINING FATTY ACID RADICALS HAVING NO LESS THAT 12 AND NO MORE THAN 26 CARBON ATOMS IN THE RADICAL WITH A POLYETHYLENE GLYCOL CONTAINING AT LEAST 3 AND NO MORE THAN 30 ETHANOXY GROUPS AT A TEMPERATURE IN THE RANGE OF 300* TO 550* F. FOR A PERIOD OF FROM 1 TO 5 HOURS IN THE PRESENCE OF AN ALKALINE REACTING CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDE AND ALKALI METAL CARBONATE, THE WEIGHT RATIO OF FATTY MATERIAL TO POLYETHYLENE GLYCOL BEING IN THE RANGE OF 1:1 TO ABOUT 3:1.
Claim 2
Independent Claim
158 words
A METHOD FOR REDUCING THE CORROSIVENESS TO CORRODIBLE FERROUS METAL OF A CORROSIVE PETROLIFEROUS WELL FLUID INCLUDING MOISTURE AND HYDROGEN SULFIDE WHICH COMPRISES INTRODUCING INTO SAID FLUID A CORROSION INHIBITING AMOUNT OF A REACTION PRODUCT OBTAINED BY REACTING A FATTY MATERIAL SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS HAVING AT LEAST 12 AND NO MORE THAN 26 CARBON ATOMS PER MOLECULE AND FATTY OILS CONTAINING FATTY ACID RADICALS HAVING NO LESS THAT 12 AND NO MORE THAN 26 CARBON ATOMS IN THE RADICAL WITH A POLYETHYLENE GLYCOL CONTAINING AT LEAST 3 AND NO MORE THAN 30 ETHANOXY GROUPS AT A TEMPERATURE IN THE RANGE OF 300* TO 550* F. FOR A PERIOD OF FROM 1 TO 5 HOURS IN THE PRESENCE OF AN ALKALINE REACTING CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDE AND ALKALI METAL CARBONATE, THE WEIGHT RATIO OF FATTY MATERIAL TO POLYETHYLENE GLYCOL BEING IN THE RANGE OF 1:1 TO ABOUT 3:1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |