![]() This patent describes a stabilizer for deep well drilling tools. The cutting inserts of each gage row include relatively large cutting faces in the direction of the sidewalls of the bore hole in order to have substantial surface contact with the gage of the bore hole. This extended gage row construction enables the gage inserts to cut into any sloping wall to produce a sharp corner and bring the hole back into line with the drill string. The gage row of each cone extends further out from the cone axis than any more ยป of the intermediate adjacent rows in such a manner that the annular area of the hole bottom cut by the gage inserts is lower than any other area cut by the intermediate rows of cutting inserts. The heel portion is of sufficient mass to support the gage row of cutting elements. Each cone cutter further includes a heel portion adjacent the base of the conical surface. A plurality of annular rows of cutting inserts are circumferentially mounted on the conical surface of each cutter. ![]() The drill bit includes a plurality of legs with each leg having a cone cutter rotatively supported thereon. A drill bit is disclosed for maintaining a desired direction of drilling or to reduce the deviation already established.
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