Pdc drill bit with cutter design optimized with dynamic...

Details Pdc drill bit with cutter design optimized with dynamic... Pdc drill bit with cutter design optimized with dynamic...

E - Fixed Constructions

21

B

E21B 10/00 (2006.01) B23B 51/00 (2006.01) B23P 15/28 (2006.01) G06F 17/50 (2006.01)

Patent

CA 2738687

A method for designing a fixed cutter drill bit, includes simulating the fixed cutter drill bit drilling in an earth formation, determining a property or characteristic of the fixed cutter drill bit 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 property or characteristic. The property or characteristic can include a Beta angle between the total of imbalanced radial forces and the total of imbalanced circular forces, a dynamic centerline trajectory of the drill bit and a distance between a centerline of the fixed cutter drill bit and a theoretical centerline of a borehole drilled through an earth formation. To facilitate drill bit design, the Beta angle 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.

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