Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8636087 | Rotating control system and method for providing a differential pressure | Don M. Hannegan, Thomas F. Bailey, Melvin T. Jacobs, Nicky A. White | 2014-01-28 |
| 8347983 | Drilling with a high pressure rotating control device | Don M. Hannegan, Thomas F. Bailey, Melvin T. Jacobs, Nicky A. White | 2013-01-08 |
| 8020625 | Monobore construction with dual expanders | Lev Ring | 2011-09-20 |
| 6607042 | Method of dynamically controlling bottom hole circulation pressure in a wellbore | Robert Graham, Adrian Steiner | 2003-08-19 |