US2961044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement compositions and process of cementing wells
Assignee: Phillips Petroleum Co
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Filing: 1957-06-17
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Granted: 1960-11-22
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Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Francis J Shell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:07
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/24; C04B24/38; C04B24/383; C04B28/00; C04B28/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD OF CEMENTING A CASING IN A WELL WHICH PENETRATES A SALT FORMATION IN THE EARTH WHICH METHOD COMPRISES PUMPING A CEMENT COMPOSITION AQUEOUS SLURRY INTO THE ANNULAR SPACE BETWEEN SAID CASTING AND THE BORE HOLE AND INTO CONTACT WITH SAID CASING AND SAID SALT FORMATION PENETRATED BY SAID BORE HOLE, SAID CEMENT COMPOSITION AQUEOUS SLURRY CONSISTING ESSENTIALLY OF: A DRY HYDRAULIC NATURAL CEMENT MIXED WITH WEIGHT PERCENTAGES OF THE WEIGHT OF SAID DRY HYDRAULIC NATURAL CEMENT OF FROM 30 TO 70 PERCENT DIATOMACEOUS EARTH, FROM 140 TO 400 PERCENT OF WATER, AND SUFFICIENT SODIUM CHLORIDE TO AT LEAST SATURATE SAID WATER WITH RESPECT TO SAID SODIUM CHLORIDE, SAID DIATOMACEOUS EARTH HAVING THE PROPERTY OF FORMING AN ESSENTIALLY NON-SETTLING SLURRY HAVING A BLEEDING VALUE OF NOT MORE THAN THREE WHEN SAID CEMENT AND SAID DIATOMACEOUS EARTH ARE BLENDED WITH A SUFFICIENT AMOUNT OF SAID WATER TO PRODUCE SAID SLURRY.
Claim 2
Independent Claim
150 words
A METHOD OF CEMENTING A CASING IN A WELL WHICH PENETRATES A SALT FORMATION IN THE EARTH WHICH METHOD COMPRISES PUMPING A CEMENT COMPOSITION AQUEOUS SLURRY INTO THE ANNULAR SPACE BETWEEN SAID CASTING AND THE BORE HOLE AND INTO CONTACT WITH SAID CASING AND SAID SALT FORMATION PENETRATED BY SAID BORE HOLE, SAID CEMENT COMPOSITION AQUEOUS SLURRY CONSISTING ESSENTIALLY OF: A DRY HYDRAULIC NATURAL CEMENT MIXED WITH WEIGHT PERCENTAGES OF THE WEIGHT OF SAID DRY HYDRAULIC NATURAL CEMENT OF FROM 30 TO 70 PERCENT DIATOMACEOUS EARTH, FROM 140 TO 400 PERCENT OF WATER, AND SUFFICIENT SODIUM CHLORIDE TO AT LEAST SATURATE SAID WATER WITH RESPECT TO SAID SODIUM CHLORIDE, SAID DIATOMACEOUS EARTH HAVING THE PROPERTY OF FORMING AN ESSENTIALLY NON-SETTLING SLURRY HAVING A BLEEDING VALUE OF NOT MORE THAN THREE WHEN SAID CEMENT AND SAID DIATOMACEOUS EARTH ARE BLENDED WITH A SUFFICIENT AMOUNT OF SAID WATER TO PRODUCE SAID SLURRY.
References Cited (Backward Citations)
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Cited
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US2427683A
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US2582459A
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |