PDC drill bit using optimized side rake angle
AssigneeSmith International, Inc.
InventorsBala Durairajan, Peter Thomas Cariveau, Sujian J. Huang
Life of this patent
Estimating the term…
Abstract
A fixed cutter drill bit and a method for designing a fixed cutter drill bit includes simulating the fixed cutter drill bit drilling in an earth formation. A performance characteristic of the simulated fixed cutter drill bit is determined. A side rake angle distribution of the cutters is adjusted at least along a cone region of a blade of the fixed cutter drill bit to change the performance characteristic of the fixed cutter drill bit.
Claims9
A drill bit comprising cutters positioned along a blade of the drill bit in a cone region and cutters positioned along the blade in a nose region, wherein the cutters in the cone region toward a center of the drill bit have larger side rake angles than the cutters positioned along the nose region.
Dependencies are inferred from the claim text.