US3190356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cementing wells
Assignee: Gulf Oil Corp
•
Filing: 1962-08-16
•
Granted: 1965-06-22
•
Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Horace J Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:49
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/16; C04B24/18; C04B28/00; C04B28/02; C04B28/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PROCESS FOR CEMENTING OIL AND GAS WELLS HAVING A BOTTOM HOLE TEMPERATURE BELOW 200*F. AND CONTAINING A DRILLING MUD WHICH INCLUDES AN ORGANIC DRILLING MUD ADDITIVE SELECTED FROM THE GROUP CONSISTING OF FERROCHROME LIGNOSULFONATES, CHROME-LIGNITE, AND CHROME-LIGNIS WHICH RETARD THE SET OF CEMENTS, COMPRISING FORMING A PUMPABLE CEMENT SLURRY OF PORTLAND CEMENT, WATER, FORMALDEHYDE, AND SODIUM CARBONATE, THE CONCENTNRATION OF WATER IN THE SLURRY BEING ABOUT 35 TO 55 PERCENT BY WEIGHT OF THE PORTLAND CEMENT, THE CONCENTRATION OF FORMALDEHYDE IN THE SLURRY BEING ABOUT 0.2 TO 3 PERCENT BY WEIGHT OF THE PORTLAND CEMENT, AND THE CONCENTRATION OF SODIUM CARBONATE BEING ABOUT 0.05 TO 0.6 PERCENT BY WEIGHT OF THE PORTLAND CEMENT, DISPLACING THE SLURRY DOWN THE WELL INTO THE SPACE TO BE CEMENTED, AND MAINTAINING THE CEMENT SLURRY IN THE SPACE TO BE CEMENTED UNTIL THE CEMENT SETS.
Claim 2
Dependent Claim
141 words
A PROCESS FOR CEMENTING OIL AND GAS WELLS HAVING A BOTTOM HOLE TEMPERATURE BELOW 200*F. AND CONTAINING A DRILLING MUD WHICH INCLUDES AN ORGANIC DRILLING MUD ADDITIVE SELECTED FROM THE GROUP CONSISTING OF FERROCHROME LIGNOSULFONATES, CHROME-LIGNITE, AND CHROME-LIGNIS WHICH RETARD THE SET OF CEMENTS, COMPRISING FORMING A PUMPABLE CEMENT SLURRY OF PORTLAND CEMENT, WATER, FORMALDEHYDE, AND SODIUM CARBONATE, THE CONCENTNRATION OF WATER IN THE SLURRY BEING ABOUT 35 TO 55 PERCENT BY WEIGHT OF THE PORTLAND CEMENT, THE CONCENTRATION OF FORMALDEHYDE IN THE SLURRY BEING ABOUT 0.2 TO 3 PERCENT BY WEIGHT OF THE PORTLAND CEMENT, AND THE CONCENTRATION OF SODIUM CARBONATE BEING ABOUT 0.05 TO 0.6 PERCENT BY WEIGHT OF THE PORTLAND CEMENT, DISPLACING THE SLURRY DOWN THE WELL INTO THE SPACE TO BE CEMENTED, AND MAINTAINING THE CEMENT SLURRY IN THE SPACE TO BE CEMENTED UNTIL THE CEMENT SETS.
References Cited (Backward Citations)
GB667261A
Cited
US2889228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |