Earth-boring tools having differing cutting elements on a blade and related methods

An earth-boring tool for use in forming or enlarging a wellbore, comprising:

• a body;
• at least one blade projecting outwardly from the body;
• a plurality of cutting elements carried by the at least one blade, the plurality of cutting elements comprising:
• at least two shearing cutting elements positioned proximate a rotationally leading surface of the at least one blade and comprising an at least substantially planar cutting face positioned and oriented for shearing a subterranean formation when the earth-boring tool is rotated under applied force to form or enlarge a wellbore;
• and
• at least one gouging cutting element positioned adjacent to the at least one shearing cutting element and proximate the rotationally leading surface of the at least one blade, the at least one gouging cutting element comprising an at least substantially non-planar cutting face positioned and oriented for at least one of crushing and gouging a subterranean formation when the earth-boring tool is rotated under applied force to form or enlarge a wellbore, wherein the at least one gouging cutting element is located between two shearing cutting elements of the at least two shearing cutting elements, wherein the at least one gouging cutting element is positioned to rotationally follow the two shearing cutting elements of the at least two shearing cutting elements when the earth-boring tool is rotated under applied force to form or enlarge a wellbore, and wherein the at least one blade comprises a recess extending into the rotationally leading surface and a radially outer face of the at least one blade proximate the at least one gouging cutting element.

A method of forming an earth-boring tool, comprising:

• selecting at least two cutting elements to comprise two shearing cutting elements each comprising an at least substantially planar cutting face;
• locating and orienting the two shearing cutting elements on at least one blade secured to a body of an earth-boring tool for shearing a subterranean formation when the earth-boring tool is used to form or enlarge a wellbore;
• selecting at least one cutting element to comprise a gouging cutting element comprising a non-planar cutting face;
• locating and orienting the gouging cutting element on the at least one blade for at least one of crushing and gouging a subterranean formation when the earth-boring tool is used to form or enlarge a wellbore;
• and
• locating the gouging cutting element adjacent to the two shearing cutting elements along a rotationally leading surface of the at least one blade;
• and
• positioning the gouging cutting element to rotationally lead the two shearing cutting elements when the earth-boring tool is used to form or enlarge a wellbore.

An earth-boring tool for use in forming or enlarging a wellbore, comprising:

• a body having a centerline;
• and
• a plurality of blades, at least two blades of the plurality of blades projecting outwardly from the body and carrying a plurality of cutting elements positioned along a leading edge of each blade, the plurality of cutting elements comprising:
• a plurality of shearing cutting elements, each shearing cutting element comprising an at least substantially planar cutting face, at least one shearing cutting element of the plurality of shearing cutting elements positioned at a first radial distance from the centerline of the body on a first blade of the plurality of blades;
• and
• at least two gouging cutting elements, each of the at least two gouging cutting elements comprising an at least substantially non-planar cutting face, at least one gouging cutting element of the at least two gouging cutting elements positioned on the first blade of the plurality of blades, at least another gouging cutting element of the at least two gouging cutting elements positioned at a second radial distance from the centerline of the body that is greater than the first radial distance on a second blade of the plurality of blades, wherein each of the at least one gouging cutting element and the at least another gouging cutting element is positioned between and rotationally leading two shearing cutting elements of the plurality of shearing cutting elements.

A method of forming an earth-boring tool, comprising:

• positioning at least one shearing cutting element of a plurality of shearing cutting elements each comprising an at least substantially planar cutting face on at least one of a shoulder region and a gage region of a first blade of a plurality of blades secured to a body of the earth-boring tool at a first radial distance from a centerline of the body;
• positioning at least one gouging cutting element of a plurality of gouging cutting elements each comprising a non-planar cutting face adjacent to the at least one shearing cutting element of the plurality of shearing cutting elements on at least one of a shoulder region and a gage region of the at least one blade at a rotationally leading surface of the at least one blade;
• and
• positioning at least another gouging cutting element of the plurality of gouging cutting elements on at least one of a shoulder region and a gage region of a second blade of the plurality of blades at a rotationally leading surface of the at least one blade and at a second radial distance from the centerline of the body greater than the first radial distance.