Benoit Amaudric du Chaffaut

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Voisins le Bretonneux, FR

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Patents Grantslast 30 patents

Information Patent Grant
Reverse-circulation drilling method and system
- Patent number 7,290,625
- Issue date Nov 6, 2007
- Institut Francais du Petrole
- Benoit Amaudric Du Chaffaut
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device and method for controlling the trajectory of a wellbore
- Patent number 6,209,664
- Issue date Apr 3, 2001
- Francis du Petrole
- Benoît Amaudric du Chaffaut
- E21 - EARTH DRILLING MINING
Information Patent Grant
Remote control method and device for actuating an equipment-applica...
- Patent number 5,483,987
- Issue date Jan 16, 1996
- Institut Francais du Petrole
- Benoit Amaudric du Chaffaut
- E21 - EARTH DRILLING MINING
Information Patent Grant
Device for remote actuating equipment comprising delay means
- Patent number 5,443,128
- Issue date Aug 22, 1995
- Institut Francais du Petrole
- Benoit Amaudric du Chaffaut
- E21 - EARTH DRILLING MINING
Information Patent Grant
Actuating device associated with a drill string and comprising a hy...
- Patent number 5,310,012
- Issue date May 10, 1994
- Institut Francais du Petrole
- Andre Cendre
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Reverse-circulation drilling method and system
- Publication number 20060060385
- Publication date Mar 23, 2006
- Benoit Amaudric Du Chaffaut
- E21 - EARTH DRILLING MINING