Well cementing compositions
Abstract
Abstract THIS SPECIFICATION DISCLOSES CEMENT COMPOSITIONS COMPRISING HYDRAULIC CEMENT IN ADMIXTURE WITH A TURBULENCE INDUCER AND SILICA OR DIATOMACEOUS EARTH PARTICLES HAVING SIZES WITHIN THE RANGE OF ABOUT 0.1 TO ABOUT 44 MICRONS IN DIAMETER. THE TURBULENCE INDUCER AND SILICA OR DIATOMACEOUS EARTH PARTICLES ARE PRESENT IN THE COMPOSITION IN AMOUNTS WITHIN THE RANGES OF 0.1 TO 2.0 PERCENT BY WEIGHT AND 0.5 TO 10.0 PERCENT BY WEIGHT, RESPECTIVELY, BASED UPON THE AMOUNT OF HYDRAULIC CEMENT PRESENT. ALSO DISCLOSED IS A CEMENT SLURRY OF A CONSISTENCY LESS THAN 30 POISES CONTAINING HYDRAULIC CEMENT, WATER IN AN AMOUNT WITHIN THE RANGE OF 27 TO 115 PERCENT BY WEIGHT BASED UPON THE AMOUNT OF CEMENT PRESENT, AND TURBULENCE INDUCER AND SILICA OR DIATOMACEOUS EARTH PARTICLES IN THE AMOUNTS DESCRIBED ABOVE. THIS SLURRY RETAINS AN ADEQUATE YIELD POINT AND YET CAN BE FLOWED IN TURBULENCE AT RELATIVELY LOW FLOW RATES. THUS IT IS ESPECIALLY SUITABLE FOR USE IN WELL CEMENTING OPERATIONS.
Inventors
- 👤 Joseph U Messenger
Bibliographic Details
Claims Analysis
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |