Back to results
US 12,215,549 B2Granted
Drill bit
AssigneeUlterra Drilling Technologies, L.P.
InventorsJorge Arthur Silveus, III, Alfred Harold Skinner, Benjamin Chrest
Life of this patent
Estimating the term…
Abstract
A drill bit including a body having a face and a plurality of blades disposed on the face of the body. Each of the plurality of blades may have a row of cutters disposed thereon, and the rows of cutters may collectively define a cutting profile of the drill bit. At least some of the cutters along the cutting profile may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters along the cutting profile may be less than 20°.
Claims19
A drill bit, comprising:
- a body having a face and a central bit axis;
- and
- a plurality of blades disposed on the face of the body, each of the plurality of blades having a row of cutters disposed thereon, the rows of cutters collectively defining a cutting profile of the drill bit, wherein:
- wherein a nose region and a cone region of the face, at least six radially adjacent cutters of the cutters along the cutting profile having alternating positive back rake angles;
- at least some adjacent cutters of the cutters along the cutting profile have non-alternating back rake angles;
- and
- the difference between a majority of back rake angles on adjacent cutters along the cutting profile is less than 20°.
4 more elements
A method of using a drill bit, comprising:
- drilling a borehole with a drill bit, wherein the drill bit comprises:
- a body having a face and a central bit axis;
- and
- a plurality of blades disposed on the face of the body, each of the plurality of blades having a row of cutters disposed thereon, the rows of cutters collectively defining a cutting profile of the drill bit, wherein:
- wherein a nose region and a cone region of the face, at least six radially adjacent cutters of the cutters along the cutting profile have alternating positive back rake angles;
- at least some adjacent cutters of the cutters along the cutting profile have non-alternating back rake angles;
- and
- the difference between a majority of back rake angles on adjacent cutters along the cutting profile is less than 20°.
5 more elements
Dependencies are inferred from the claim text.