Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677266 | Method for inhibiting reactive argillaceous formations and use thereof in a drilling fluid | Annie Audibert, Jacqueline Lecourtier, Geoffrey Maitland | 1997-10-14 |
| 5669456 | Process and water-base fluid utilizing hydrophobically modified cellulose derivatives as filtrate reducers | Annie Audibert, Jean-Francois Argillier, Paul Reid | 1997-09-23 |
| 5637556 | Process and water-base fluid for controlling the dispersion of solids application to drilling | Jean-Francois Argillier, Annie Audibert, Paul Reid | 1997-06-10 |
| 5597783 | Drilling processes and fluid used in well drilling applications | Annie Audibert, Jean-Francois Argillier, Jacqueline Lecourtier, Paul Reid | 1997-01-28 |