Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669456 | Process and water-base fluid utilizing hydrophobically modified cellulose derivatives as filtrate reducers | Annie Audibert, Louise Bailey, Paul Reid | 1997-09-23 |
| 5637556 | Process and water-base fluid for controlling the dispersion of solids application to drilling | Annie Audibert, Louise Bailey, Paul Reid | 1997-06-10 |
| 5618780 | Lubricating composition including an ester-use of the composition and well fluid including the composition | Annie Audibert, Pierre Marchand, Andr e Demoulin, Michel Janssen | 1997-04-08 |
| 5597783 | Drilling processes and fluid used in well drilling applications | Annie Audibert, Jacqueline Lecourtier, Louise Bailey, Paul Reid | 1997-01-28 |