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PDC drill bit with cutter design optimized with dynamic centerline analysis having an angular separation in imbalance forces of 180 degrees for maximum time

  • US 20060167669A1
  • Filed: 01/24/2005
  • Published: 07/27/2006
  • Est. Priority Date: 01/24/2005
  • Status: Active Grant
First Claim
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1. A method for designing a fixed cutter drill bit, comprising:

  • dynamically simulating the fixed cutter drill bit drilling in an earth formation for a period of time;

    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 force during the period of dynamically simulated drilling;

    adjusting a value of at least one design parameter for the fixed cutter drill bit based upon at least the Beta angle; and

    repeating the simulating, determining, and adjusting to change a simulated performance of the fixed cutter drill bit.

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