US3272741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well completion or workover fluid
Assignee: Texaco Inc
•
Filing: 1962-03-29
•
Granted: 1966-09-13
•
Expires: 1982-03-29
Abstract
No abstract record available.
Inventors
- 👤 John S Brukner
- 👤 Charles C Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/16; Y; Y10; Y10S; Y10S507/00; Y10S507/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A HEAT STABLE WELL COMPLETION OR WORKOVER FLUID CONSISTING ESSENTIALLY OF AN AQUEOUS BRINE SOLUTION HAVING DISSOLVED THEREIN A COMPATIBLE WATER SOLUBLE INORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF A WATER SOLUBLE, CHROMATE, A WATER SOLUBLE POLYCHROMATE AND MIXTURES THEREOF, SAID COMPOUND BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 15 PERCENT BY WEIGHT OF THE SOLUTION AND TO PROVIDE A FLUID HAVING A DENSITY BETWEEN ABOUT 9 AND 21 LBS. PER GALLON.
Claim 2
Dependent Claim
75 words
A HEAT STABLE WELL COMPLETION OR WORKOVER FLUID CONSISTING ESSENTIALLY OF AN AQUEOUS BRINE SOLUTION HAVING DISSOLVED THEREIN A COMPATIBLE WATER SOLUBLE INORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF A WATER SOLUBLE, CHROMATE, A WATER SOLUBLE POLYCHROMATE AND MIXTURES THEREOF, SAID COMPOUND BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 15 PERCENT BY WEIGHT OF THE SOLUTION AND TO PROVIDE A FLUID HAVING A DENSITY BETWEEN ABOUT 9 AND 21 LBS. PER GALLON.
References Cited (Backward Citations)
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |