US2605223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical treatment of wells for the prevention of corrosion
Assignee: Gulf Oil Corp
•
Filing: 1950-05-26
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Granted: 1952-07-29
•
Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 Case Leslie Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:48
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/932; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF INHIBITING CORROSIVE ATTACK OF METAL EQUIPMENT BY AQUEOUS WELL FLUIDS CONTAINING SULFIDES, CARBON DIOXIDE OR MIXTURES REACTION PRODUCT OF AQUEOUS SOLUTION OF FORM THEREOF WHICH COMPRISES SEPARATELY PREPARING A ALDEHYDE AND HYDROGEN SULFIDE UNDER CONTROLLED CONDITIONS INCLUDING A REACTION TEMPERATURE NOT EXCEEDING ABOUT 80* F. AND A REACTION TIME NOT EXCEEDING ABOUT 30 HOURS TO OBTAIN AN AQUEOUS OILY LIQUID REACTION PRODUCT, ADDING TO SAID PRODUCT AN AMOUNT OF A WATER-MISCIBLE OXYGEN-CONTAINING ORGANIC SOLVENT TO OBTAIN A SOLUTION OF SAID PRODUCT IN SAID SOLVENT CONTAINING AT LEAST ABOUT 30 PER CENT BY VOLUME OF SAID SOLVENT, AND THEN DISPERSING IN SAID WELL FLUIDS A SMALL AMOUNT OF SAID SOLUTION SUFFICIENT TO RETARD SAID CORROSIVE ATTACK.
Claim 2
Independent Claim
118 words
THE METHOD OF INHIBITING CORROSIVE ATTACK OF METAL EQUIPMENT BY AQUEOUS WELL FLUIDS CONTAINING SULFIDES, CARBON DIOXIDE OR MIXTURES REACTION PRODUCT OF AQUEOUS SOLUTION OF FORM THEREOF WHICH COMPRISES SEPARATELY PREPARING A ALDEHYDE AND HYDROGEN SULFIDE UNDER CONTROLLED CONDITIONS INCLUDING A REACTION TEMPERATURE NOT EXCEEDING ABOUT 80* F. AND A REACTION TIME NOT EXCEEDING ABOUT 30 HOURS TO OBTAIN AN AQUEOUS OILY LIQUID REACTION PRODUCT, ADDING TO SAID PRODUCT AN AMOUNT OF A WATER-MISCIBLE OXYGEN-CONTAINING ORGANIC SOLVENT TO OBTAIN A SOLUTION OF SAID PRODUCT IN SAID SOLVENT CONTAINING AT LEAST ABOUT 30 PER CENT BY VOLUME OF SAID SOLVENT, AND THEN DISPERSING IN SAID WELL FLUIDS A SMALL AMOUNT OF SAID SOLUTION SUFFICIENT TO RETARD SAID CORROSIVE ATTACK.
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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |