Baker Hughes Corporation

Henning Finke

Thorsten Schwefe

Volker Richert

Thomas Ganz

Earth-boring tools comprise a bit body comprising a face and a plurality of blades extending radially outward over the face and forming gage regions. A shank is coupled to the bit body and includes a threaded portion for connecting to a drill string. A sleeve structure is positioned adjacent to the bit body and surrounds a portion of the shank, the sleeve structure extending from adjacent the bit body to proximate the threaded portion of the shank. An outer surface of the sleeve structure comprises a plurality of circumferentially spaced gage pads extending thereover and may comprise a plurality of breaker flats.

Sleeve structures for earth-boring tools, tools including sleeve structures and methods of forming such tools

A drill bit for cutting casing employing a plurality of discrete, abrasive particulate-impregnated cutting structures having cutting structures therein extending upwardly from abrasive particulate-impregnated blades, which define a plurality of fluid passages therebetween on the bit face. Additional cutting elements may be placed in the inverted cone of the bit surrounding the centerline thereof.

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Munich, Georgia

Henning Finke