US3582375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well cementing composition
Assignee: Western Company of North America
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Filing: 1968-03-21
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Granted: 1971-06-01
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Expires: 1988-03-21
Abstract
Abstract A CEMENT SLURRY COMPOSITION ESPECIALLY DESIGNED FOR THE SETTING OF MULTIPLE STRINGS OF TUBING IN A MULTIPLE COMPLETION WELL WHEREIN THE SETTING OF THE CEMENT IS RETARDED FOR AT LEAST 10 HOURS, COMPRISING AN OIL-WELL CEMENT AND FROM 10 TO 16 PERCENT OF CLAY TOGETHER WITH RELATIVELY SMALL PROPORTIONS OF RETARDING AND DISPERSING AGENTS, NO FLUID LOSS ADDITIVES, AND NO MORE THAN ABOUT 100 PERCENT WATER, BASED ON THE DRY WEIGHT OF CEMENT.
Inventors
- 👤 Arthur F Tragesser Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:11
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |