Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697441 | Selective zonal isolation of oil wells | Claude Vercaemer, Stephen Davies, Demosthenis Georgeou Pafitis, Jean-Pierre Poyet | 1997-12-16 |
| 5677266 | Method for inhibiting reactive argillaceous formations and use thereof in a drilling fluid | Annie Audibert, Jacqueline Lecourtier, Louise Bailey | 1997-10-14 |