US2875835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature cement
Assignee: ExxonMobil Oil Corp
•
Filing: 1954-03-12
•
Granted: 1959-03-03
•
Expires: 1974-03-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Watkins
- 👤 William R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:41
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF CEMENTING A WELL COMPRISING PUMPING INTO SAID WELL CEMENT CONSISTING ESSENTIALLY OF WATER, LIME, QUARTZ,CLAY AND AN ORGANIC ADDITIVE FOR RETARDING SETTING TIME, THE CEMENT CONTAINING BETWEEN ABOUT 47 AND 53 PERCENT BY WEIGHT OF WATER AND THE SOLIDS CONTENT OF THE CEMENT CONSISTING ESSENTIALLY OF BETWEEN ABOUT 40 AND 60 PERCENT BY WEIGHT OF LIME, BETWEEN ABOUT 15 AND 25 PERCENT BY WEIGHT OF QUARTZ, BETWEEN ABOUT 15 AND 25 PERCENT BY WEIGHT OF CLAY, AND BETWEEN ABOUT 8 AND 12 PERCENT BY WEIGHT OF ORGANIC ADDITIVE FOR RETARDING SETTING TIME.
Claim 2
Independent Claim
95 words
A METHOD OF CEMENTING A WELL COMPRISING PUMPING INTO SAID WELL CEMENT CONSISTING ESSENTIALLY OF WATER, LIME, QUARTZ,CLAY AND AN ORGANIC ADDITIVE FOR RETARDING SETTING TIME, THE CEMENT CONTAINING BETWEEN ABOUT 47 AND 53 PERCENT BY WEIGHT OF WATER AND THE SOLIDS CONTENT OF THE CEMENT CONSISTING ESSENTIALLY OF BETWEEN ABOUT 40 AND 60 PERCENT BY WEIGHT OF LIME, BETWEEN ABOUT 15 AND 25 PERCENT BY WEIGHT OF QUARTZ, BETWEEN ABOUT 15 AND 25 PERCENT BY WEIGHT OF CLAY, AND BETWEEN ABOUT 8 AND 12 PERCENT BY WEIGHT OF ORGANIC ADDITIVE FOR RETARDING SETTING TIME.
References Cited (Backward Citations)
US122880A
Cited
US377036A
Cited
US720799A
Cited
US1424908A
Cited
US1635212A
Cited
US2320010A
Cited
US2285302A
Cited
US2353822A
Cited
US2404038A
Cited
US2469379A
Cited
US2491487A
Cited
US2671030A
Cited
US2509599A
Cited
US2562148A
Cited
US2793957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |