Patent Number: 7,954,571

Title: Cutting structures for casing component drillout and earth-boring drill bits including same

Abstract: A drill bit includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being at least one of an abrasive cutting structure and an abrasive cutting element suitable for drilling through a casing shoe, reamer shoe, casing bit, casing or liner string and cementing equipment or other components, as well as cement. Methods of forming earth-boring tools are also disclosed.

Inventors: McClain; Eric E. (Spring, TX), Doster; Michael L. (Spring, TX), Thomas; John C. (Lafayette, LA), Isbell; Matthew R. (Houston, TX), DeGeorge; Jarod (Houston, TX), Jurica; Chad T. (Spring, TX)

Assignee: Baker Hughes Incorporated

International Classification: E21B 10/43 (20060101)

Expiration Date: 2019-06-07 0:00:00