Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9624750 | Systems and methods of diverting fluids in a wellbore using destructible plugs | Pavlin B. Entchev, Zhihua Wang, David A. Baker, John K. Montgomery, Larry D. Mercer +1 more | 2017-04-18 |
| 8490685 | Method and apparatus associated with stimulation treatments for wells | Randy C. Tolman, Kris J. Nygaard, Jeff W. Simons, Curtis W. Kofoed | 2013-07-23 |
| 7516792 | Remote intervention logic valving method and apparatus | Steven B. Lonnes | 2009-04-14 |
| 7059407 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, David A. Kinison, Kris J. Nygaard, Glenn S. Goss +1 more | 2006-06-13 |
| 6957701 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, David A. Kinison, Kris J. Nygaard, Glenn S. Goss +1 more | 2005-10-25 |
| 6915856 | Apparatus and methods for preventing axial movement of downhole tool assemblies | Mark C. Gentry, Timothy J. Hall, Kevin H. Searles, Scott R. Clingman | 2005-07-12 |
| 6672405 | Perforating gun assembly for use in multi-stage stimulation operations | Randy C. Tolman, David A. Kinison, Kris J. Nygaard, Timothy J. Hall, Jeffrey R. Bailey | 2004-01-06 |
| 6543538 | Method for treating multiple wellbore intervals | Randy C. Tolman, Kris J. Nygaard, Abdel Wadood M. El-Rabaa | 2003-04-08 |
| 6520255 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, David A. Kinison, Kris J. Nygaard, Glenn S. Goss +1 more | 2003-02-18 |
| 6394184 | Method and apparatus for stimulation of multiple formation intervals | Randy C. Tolman, Lawrence O. Carlson, David A. Kinison, Kris J. Nygaard, Glenn S. Goss +1 more | 2002-05-28 |
| 6336583 | Welding process and welded joints | Yung-Shih Wang | 2002-01-08 |