Data processing: structural design – modeling – simulation – and em – Simulating nonelectrical device or system – Mechanical
Reexamination Certificate
2005-01-24
2010-11-09
Sparks, Donald (Department: 2129)
Data processing: structural design, modeling, simulation, and em
Simulating nonelectrical device or system
Mechanical
C175S336000
Reexamination Certificate
active
07831419
ABSTRACT:
A method for designing a fixed cutter drill bit, includes simulating the fixed cutter drill bit drilling in an earth formation, determining radial and circumferential components of imbalance forces on the drill bit and a Beta angle between the radial and circumferential components of the imbalance forces during a period of simulated drilling, and adjusting a value of at least one design parameter for the fixed cutter drill bit at least based upon the Beta angle. To facilitate drill bit design, the Beta angel can be displayed to a drill bit designer. To improve performance, the method can include repeating the simulating, determining, and adjusting to change a simulated performance of the fixed cutter drill bit. A drill bit may be made according to the design resulting from the method.
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Cariveau Peter Thomas
Durairajan Bala
Huang Sujian
Osha & Liang LLP
Rifkin Ben M
Smith International Inc.
Sparks Donald
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