Patent US2967150A successfully refreshed from Google Patents.
US2967150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low surface area mud
Assignee: Jersey Production Research Co
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Filing: 1957-03-21
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Granted: 1961-01-03
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Charles L Prokop
- 👤 John W Graham
- 👤 Richard A Salathiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A DRILLING FLUID CONSISTING ESSENTIALLY OF: WATER HAVING FROM 0 TO 10% BY WEIGHT OF SALT DISSOLVED THEREIN TO WHICH HAS BEEN ADDED A SURFACE-ACTIVE AGENT CONSISTING OF A CATIONIC SALT TO PREFERENTIALLY WET EARTH FORMATIONS BY HYDROCARBONS PRESENT IN THE EARTH''S FORMATIONS CONTACTED THEREBY; BETWEEN 1/2 AND 2 POUNDS OF GUAR SEED GUM AND UP TO 10 POUNDS OF STARCH PER 42 GALLON BARREL OF DRILLING FLUID; AND A WEIGHTING AGENT SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE, BARIUM SULPHATE, AND MIXTURES OF CALCIUM CARBONTE AND BARIUM SULPHATE SUFFICIENT IN AMOUNT TO SUBSTANTIALLY AID SAID STARCH AND GUAR SEED GUM IN LOWERING THE FILTRATION RATE OF SAID DRILLING FLUID
Claim 2
Dependent Claim
111 words
A DRILLING FLUID CONSISTING ESSENTIALLY OF: WATER HAVING FROM 0 TO 10% BY WEIGHT OF SALT DISSOLVED THEREIN TO WHICH HAS BEEN ADDED A SURFACE-ACTIVE AGENT CONSISTING OF A CATIONIC SALT TO PREFERENTIALLY WET EARTH FORMATIONS BY HYDROCARBONS PRESENT IN THE EARTH''S FORMATIONS CONTACTED THEREBY; BETWEEN 1/2 AND 2 POUNDS OF GUAR SEED GUM AND UP TO 10 POUNDS OF STARCH PER 42 GALLON BARREL OF DRILLING FLUID; AND A WEIGHTING AGENT SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE, BARIUM SULPHATE, AND MIXTURES OF CALCIUM CARBONTE AND BARIUM SULPHATE SUFFICIENT IN AMOUNT TO SUBSTANTIALLY AID SAID STARCH AND GUAR SEED GUM IN LOWERING THE FILTRATION RATE OF SAID DRILLING FLUID
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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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |