US3372112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling fluids having enhanced lubricating properties
Assignee: Phillips Petroleum Co
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Filing: 1964-05-14
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Granted: 1968-03-05
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Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:04
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22; C09K8/26; C09K2208/00; C09K2208/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PUMPABLE AQUEOUS DRILLING FLUID HAVING ENHANCED LUBRICATING PROPERTIES CONSISTING OF WATER, FROM 1 TO 15 WEIGHT PERCENT OF FINELY DIVIDED INORGANIC SOLIDS, AND A SMALL BUT EFFECTIVE AMOUNT, SUFFICIENT TO PROVIDE SAID ENHANCED LUBRICATING PROPERTIES BUT INSUFFICIENT TO INCREASE THE VISCOSITY OF THE DRILLING FLUID TO THE EXTENT THAT IT CANNOT BE READILY PUMPED AND CIRCULATED, OF AN AMINE SELECTED FROM THE GROUP OF AMINES HAVING THE FORMULA
Claim 2
Dependent Claim
69 words
A PUMPABLE AQUEOUS DRILLING FLUID HAVING ENHANCED LUBRICATING PROPERTIES CONSISTING OF WATER, FROM 1 TO 15 WEIGHT PERCENT OF FINELY DIVIDED INORGANIC SOLIDS, AND A SMALL BUT EFFECTIVE AMOUNT, SUFFICIENT TO PROVIDE SAID ENHANCED LUBRICATING PROPERTIES BUT INSUFFICIENT TO INCREASE THE VISCOSITY OF THE DRILLING FLUID TO THE EXTENT THAT IT CANNOT BE READILY PUMPED AND CIRCULATED, OF AN AMINE SELECTED FROM THE GROUP OF AMINES HAVING THE FORMULA
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |