PDC drill bit using optimized side rake angle
First Claim
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1. A method for designing a fixed cutter drill bit, comprising:
- simulating the fixed cutter drill bit drilling in an earth formation;
determining at least one performance characteristic for the fixed cutter drill bit;
adjusting a side rake angle of at least one cutter of the fixed cutter drill bit; and
repeating the simulating, the determining, and the adjusting until the at least one performance characteristic meets a selected criterion.
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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.
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Citations
35 Claims
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1. A method for designing a fixed cutter drill bit, comprising:
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simulating the fixed cutter drill bit drilling in an earth formation;
determining at least one performance characteristic for the fixed cutter drill bit;
adjusting a side rake angle of at least one cutter of the fixed cutter drill bit; and
repeating the simulating, the determining, and the adjusting until the at least one performance characteristic meets a selected criterion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 24)
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18. A method for designing a fixed cutter drill bit, comprising:
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simulating the fixed cutter drill bit drilling in an earth formation;
determining at least one performance characteristic for the fixed cutter drill bit;
adjusting at least the side rake angle distribution of cutters at least along a cone region of a blade of the fixed cutter drill bit to change the at least one performance characteristic of the fixed cutter drill bit. - View Dependent Claims (19, 20, 21, 22, 23, 25)
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- 26. 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.
Specification