US2695669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement compositions and cementing operations
Assignee: Individual
•
Filing: 1953-06-16
•
Granted: 1954-11-30
•
Expires: 1973-06-16
Abstract
No abstract record available.
Inventors
- 👤 Carroll V Sidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:11
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/5045; C04; C04B; C04B28/00; C04B28/02; Y; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S106/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
THE METHOD OF CEMENTING OIL AND GAS WELLS OR THE LIKE COMPRISING ADMIXING CEMENT AND VOLCANIC ROCK WHICH HAS BEEN EXPANDED INTO CELLULAR FORM BY HEATING, IN A RATIO BY VOLUME OF BETWEEN ABOUT 1 PART CEMENT TO FROM ABOUT 0.1 PART TO 8 PARTS EXPANDED VOLCANIC ROCK AND UP TO ABOUT 10% BENTONITE BY WEIGHT OF THE WEIGHT OF THE CEMENT IN WATER AND PUMPING THE RESULTING ADMIXTURE INTO THE WELL HOLE.
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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) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |