Tercel IP Limited

Total Sa

Lynx Drilling Tools Limited

Pmds, LLC

Sébastian Desmette

Abdelhakim Hahati

Robert Delwiche

Benoît Deschamps

Matthieu Naegel

Thomas Richard

Benoit Deschamps

Dominique Goudelouf

Fabrice Dagrain

Philippe Brux

Patrick Marchandise

Rotary rock bit comprising a tool body having an axial core () and radial blades () made of steel, grooves () hollowed out in the edge () of the blades, transversely thereto, and cylindrical abrasive elements () comprising impregnated diamonds, which are disposed in the grooves, transversely to the blades.

Rotary drill and method for the production thereof

The invention relates to a device including an apparatus for measuring drilling or coring operation parameters using a bit attached to the end of a drill string, the measuring apparatus () being housed in a chamber () provided in a sleeve () that is designed to be positioned between two drill pipes of the drill string or between the bit and a drill pipe of the drill string, or to form a coupling () for joining a cutting head () of the bit to a drill string, the chamber () leading into an axial channel () of the sleeve.

Device including an apparatus for measuring drilling or coring operation parameters, and equipment including such a device

A bit for drilling wells has a front face with radial blades having cutting elements distributed around the front face. A space for forming a core is situated at the center of the front face. A cavity is provided for evacuating the core towards a periphery of the bit. At least a portion of the cavity is situated between adjacent blades. The cavity is delimited by two lateral surfaces and a clearance surface set back with respect to the front face, and the cavity is open in a direction opposite the clearance surface. The bit may be used in methods for drilling wells and makes it possible to rapidly drill wells of great depth in all types of rock without the risk of clogging.

Bit for drilling wells and associated drilling method

Device comprising equipment for measuring parameters of a drilling or coring operation by means of a drillbit fixed to the end of a drill string, measurement equipment () being housed in a chamber () made in a coupling () that is designed to be interposed between two drill string pipes or between the drillbit and a drill string pipe, or to constitute an adapter () for a cutting head () of the drillbit of a drill string.

Device for monitoring a drilling or coring operation and installation comprising such a device

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Thieusies, Belgium

Sébastian Desmette