Earth-boring tools having fixed blades and rotatable cutting structures and related methods

• Main Authors: Ricks, Gregory L, Felderhoff, Floyd C, Rothe, Mitchell A
• Format: Patent
• Language: English
• Published: 13.10.2020
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

An earth-boring tool includes a body, at least one blade, and at least one rotatable cutting structure. The blade extends axially from the body and extends radially outward from a center longitudinal axis of the earth-boring tool to less than an outer diameter of the earth-boring tool. The blade defines a first cutting profile. The at least one rotatable cutting structure assembly is coupled to the body and includes a leg extending axially from the body and a rotatable cutting structure rotatably coupled to the leg. The rotatable cutting structure defines a second cutting profile extending to the outer diameter of the earth-boring tool. The first cutting profile overlaps with the second cutting profile in a radial direction in an amount that is less than 20% of the outer diameter of the earth-boring tool. A method of making an earth-boring tool.