Robert Delwiche

TL;DR: Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles (44) dispersed within and bonded to a metallic matrix deposit was proposed in this paper.

TL;DR: In this article, a drill bit is used in particular in the oil well drilling field comprising a central body (2), cutting blades (3) protruding with respect to the body, both at the front of this body according to a drill direction and at the sides of this same body, and cutting elements (9) divided over an outer front surface (10) and over an inner lateral well sizing surface (11) comprised by each blade (3), wherein there are provided as cutting elements: in a central area (13) of the front surface, on at least one blade

TL;DR: In this article, a mixture of diamond impregnated inserts and wear resistant diamond-impregnated insert was used for a stabilizer-reamer for drilling string characterized in that it consisted of a mixture consisting of cutting diamond and wear-resistant diamond-implicated inserts.

TL;DR: Stabilisateur-aleseur for train de forage as mentioned in this paper, caracterise en ce qu'il comprend un melange d'inserts diamantes, le melange comprenant des inserts diamantes de coupe (10) and des insert diamantes resistants a lusure (12) ayant une granulometrie du diamant inferieure and une concentration en diamant superieure.