E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/72
E21B 10/00 (2006.01) E21B 10/08 (2006.01) E21B 10/18 (2006.01) E21B 10/20 (2006.01) E21B 10/22 (2006.01) E21B 10/52 (2006.01)
Patent
CA 1082685
ABSTRACT OF THE DISCLOSURE A rotary drill bit for drilling a well in the surface of the earth the -- drill bit comprising a drill bit body including an upper portion for connection to a drill string, duct means for carrying fluid to extract detritus and clear the bottom of the well and receiving means; a solid cutting head comprising a conical head portion and a stem portion, the conical head portion including holes therein and cutting elements inserted in the holes, the stem portion -- being received in the receiving means of the drill bit body, wherein the stem and the receiving means include holding means for rotatably holding the - - cutting head in the drill bit body; bearing means between the drill bit body - and the conical head; and a lubrication system interconnected between the - drill bit body and the cutting head.
291544
Barnetche-Gonzalez Eduardo
Borden Ladner Gervais Llp
LandOfFree
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