US2965566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil base drilling and fracturing fluid
Assignee: SESPE LAB
•
Filing: 1956-08-13
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Granted: 1960-12-20
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Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Hoeppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:00
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/32; C09K8/60; C09K8/62; C09K8/64; E; E21; E21B; E21B21/00; E21B21/003; Y; Y10; Y10S; Y10S507/00; Y10S507/91; Y10S507/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A LOW VISCOSITY AND LOW FLUID LOSS DRILLING AND FRACTURING FLUID COMPOSITION PREPARED BY DISPERSING IN A MINERAL SUBSTANTIALLY ASPHALT-FREE OIL, (1) BETWEEN ABOUT 0.5 AND ABOUT 5 PERCENT BY WEIGHT OF UNSATURATED ALIPHATIC CARBOXYLIC ACIDS CONTAINING AT LEAST 8 CARBON ATOMS, (2) BETWEEN ABOUT 1 AND ABOUT 60 PERCENT BY WEIGHT OF WATER, (3) BETWEEN ABOUT 1 AND ABOUT 5 PERCENT BY WEIGHT OF AN ALKALINE EARTH BASE, AND (4) A WATER SOLUBLE SALT OF A TRIVALENT HEAVY METAL IN AN AMOUNT REPRESENTING BETWEEN ABOUT 20 AND 400 MILLI-EQUIVALENTS PER LITER OF THE ENTIRE COMPOSITION.
Claim 2
Dependent Claim
96 words
A LOW VISCOSITY AND LOW FLUID LOSS DRILLING AND FRACTURING FLUID COMPOSITION PREPARED BY DISPERSING IN A MINERAL SUBSTANTIALLY ASPHALT-FREE OIL, (1) BETWEEN ABOUT 0.5 AND ABOUT 5 PERCENT BY WEIGHT OF UNSATURATED ALIPHATIC CARBOXYLIC ACIDS CONTAINING AT LEAST 8 CARBON ATOMS, (2) BETWEEN ABOUT 1 AND ABOUT 60 PERCENT BY WEIGHT OF WATER, (3) BETWEEN ABOUT 1 AND ABOUT 5 PERCENT BY WEIGHT OF AN ALKALINE EARTH BASE, AND (4) A WATER SOLUBLE SALT OF A TRIVALENT HEAVY METAL IN AN AMOUNT REPRESENTING BETWEEN ABOUT 20 AND 400 MILLI-EQUIVALENTS PER LITER OF THE ENTIRE COMPOSITION.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |