US2861042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion fluid for wells
Assignee: ExxonMobil Oil Corp
•
Filing: 1955-08-15
•
Granted: 1958-11-18
•
Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:32
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; C09K23/00; C09K23/017; Y; Y10; Y10S; Y10S507/00; Y10S507/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
A FLUID FOR THE TREATMENT OF A WELL COMPRISING A WATER-IN-OIL EMULSION CONTAINING AS AN EMULSIFYING AGENT TALL OIL WHICH HAS BEEN SUBJECTED TO THE ACTION OF OXYGEN FOR SUCH TIME AND AT SUCH TEMPERATURES THAT ITS VISCOSITY MEASURED IN CENTIPOISES AT 200*F. HAS INCREASED TO BETWEEN 125 AND 250 PERCENT OF THE ORIGINAL VALUE.
Claim 2
Dependent Claim
55 words
A FLUID FOR THE TREATMENT OF A WELL COMPRISING A WATER-IN-OIL EMULSION CONTAINING AS AN EMULSIFYING AGENT TALL OIL WHICH HAS BEEN SUBJECTED TO THE ACTION OF OXYGEN FOR SUCH TIME AND AT SUCH TEMPERATURES THAT ITS VISCOSITY MEASURED IN CENTIPOISES AT 200*F. HAS INCREASED TO BETWEEN 125 AND 250 PERCENT OF THE ORIGINAL VALUE.
Claim 3
Dependent Claim
60 words
A FLUID FOR THE TREATMENT OF A WELL COMPRISING A WATER-IN-OIL EMULSION CONTAINING AS AN EMULSIFYING AGENT TALL OIL WHICH HAS BEEN SUBJECTED TO THE ACTION OF OXYGEN FOR SUCH TIME AND AT SUCH TEMPERATURES THAT ITS VISCOSITY MEASURED IN CENTIPOISES AT 200*F. HAS INCREASED TO BETWEEN 125 AND 250 PERCENT OF THE ORIGINAL VALUE AND CONTAINING A QUATERNARY AMINE.
Claim 4
Dependent Claim
60 words
A FLUID FOR THE TREATMENT OF A WELL COMPRISING A WATER-IN-OIL EMULSION CONTAINING AS AN EMULSIFYING AGENT TALL OIL WHICH HAS BEEN SUBJECTED TO THE ACTION OF OXYGEN FOR SUCH TIME AND AT SUCH TEMPERATURES THAT ITS VISCOSITY MEASURED IN CENTIPOISES AT 200*F. HAS INCREASED TO BETWEEN 125 AND 250 PERCENT OF THE ORIGINAL VALUE AND CONTAINING A QUATERNARY AMINE.
References Cited (Backward Citations)
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Cited
US2509588A
Cited
US2568741A
Cited
US2539975A
Cited
US2702787A
Cited
US2675353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |