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Patent applications and USPTO patent grants for Gueuret; Francois C..The latest application filed is for "method of isolating production zones in a well, and apparatus for implementing the method".
Patent | Date |
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Method of isolating production zones in a well, and apparatus for implementing the method Grant 4,913,232 - Cheymol , et al. April 3, 1 | 1990-04-03 |
Geomechanical probe for a drilling well Grant 4,800,753 - Despax , et al. January 31, 1 | 1989-01-31 |
Safety valve installed below an activation pump in a hydrocarbon production well Grant 4,474,234 - Lefebvre , et al. October 2, 1 | 1984-10-02 |
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