Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8006761 | Wellbore fluid comprising a base fluid and a particulate bridging agent | Christopher Alan Sawdon | 2011-08-30 |
| 7943554 | Wellbore fluid comprising at least one polymer containing pendant alkyl groups | Christopher Alan Sawdon | 2011-05-17 |
| 7919437 | Wellbore fluid comprising sulfonated copolymers with pendant alkyl groups | Christopher Alan Sawdon | 2011-04-05 |