Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9273533 | Well tool including swellable material and integrated fluid for initiating swelling | David B. Allison, Steven G. Streich, Christopher J. Chalker, Kristian Solhaug | 2016-03-01 |
| 8353355 | Drill string/annulus sealing with swellable materials | Lee Morgan Smith, Vijay Karode, Karl Michael Tunstall | 2013-01-15 |
| 7866408 | Well tool including swellable material and integrated fluid for initiating swelling | David B. Allison, Steven G. Streich, Christopher J. Chalker, Kristian Solhaug | 2011-01-11 |
| 6343658 | Underbalanced well completion | — | 2002-02-05 |
| 6167974 | Method of underbalanced drilling | — | 2001-01-02 |
| 6152232 | Underbalanced well completion | Stuart M. Dennistoun, Wade Meaders | 2000-11-28 |