US2898294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well completion fluids
Assignee: Jersey Production Research Co
•
Filing: 1956-12-24
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Granted: 1959-08-04
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Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Gerald G Priest
- 👤 Bryan E Morgan
- 👤 Melba L Lytle
- 👤 Joseph A Caldwell
- 👤 Bertie F Birdwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:18
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/26; C09K8/28; C09K8/32; C09K8/36; Y; Y10; Y10S; Y10S507/00; Y10S507/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A WELL COMPLETION FLUID STABLE AT WELL TEMPERATURES CONSISTING OF AN AQUOEOUS PHASE AND AN OILY PHASE, THE AQUEOUS OF SAID PHASES CONTAINING A WATER SOLUBLE WEIGHTING AGENT, SAID OILY PHASE CONTAINING NO LESS THAN 10% BY VOLUME OF TETRACHLOROTHYLENE, A CORROSION INHIBITOR DISSOLVED IN ONE OF SAID PHASES IN A CORROSION INHIBITING AMOUNT, AND AN EMULSIFYING AGENT SUITABLE AND IN AN AMOUNT SUFFICIENT TO FORM SAID PHASES INTO A HEAT STABLE EMULSION AT WELL TEMPERATURES RANGING UP TO 250*F.
Claim 2
Dependent Claim
80 words
A WELL COMPLETION FLUID STABLE AT WELL TEMPERATURES CONSISTING OF AN AQUOEOUS PHASE AND AN OILY PHASE, THE AQUEOUS OF SAID PHASES CONTAINING A WATER SOLUBLE WEIGHTING AGENT, SAID OILY PHASE CONTAINING NO LESS THAN 10% BY VOLUME OF TETRACHLOROTHYLENE, A CORROSION INHIBITOR DISSOLVED IN ONE OF SAID PHASES IN A CORROSION INHIBITING AMOUNT, AND AN EMULSIFYING AGENT SUITABLE AND IN AN AMOUNT SUFFICIENT TO FORM SAID PHASES INTO A HEAT STABLE EMULSION AT WELL TEMPERATURES RANGING UP TO 250*F.
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |