| 6500252 |
High strength foamed well cement compositions and methods |
Jiten Chatterji, Frank Zamora, Clyde R. Anderson, Billy Bennett, Roger S. Cromwell |
2002-12-31 |
| 6460632 |
Methods of drilling well bores |
Jiten Chatterji, Roger S. Cromwell, Frank Zamora, Ronald J. Crook |
2002-10-08 |
| 6448206 |
Sealing subterranean zones |
James E. Griffith, Ricky A. Cox, Jiten Chatterji, Roger S. Cromwell, John L. Dennis, Jr. |
2002-09-10 |
| 6417142 |
Defoaming methods and compositions |
Jiten Chatterji, Roger S. Cromwell, Frank Zamora |
2002-07-09 |
| 6401817 |
Sealing subterranean zones |
James E. Griffith, Ricky A. Cox, Jiten Chatterji, Roger S. Cromwell, John L. Dennis, Jr. |
2002-06-11 |
| 6367550 |
Foamed well cement slurries, additives and methods |
Jiten Chatterji, Roger S. Cromwell, Chad Brenneis, Dennis W. Gray, Frank Zamora |
2002-04-09 |
| 6367549 |
Methods and ultra-low density sealing compositions for sealing pipe in well bores |
Jiten Chatterji, Roger S. Cromwell, Dennis W. Gray, Ronald J. Crook, Frank Zamora |
2002-04-09 |
| 6364945 |
Methods and compositions for forming permeable cement sand screens in well bores |
Jiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy, Philip D. Nguyen, David L. Brown |
2002-04-02 |
| 6350309 |
Methods and compositions for cementing pipe strings in well bores |
Jiten Chatterji, Roger S. Cromwell, Robert D. Kuhlman |
2002-02-26 |