Techniques for modeling/simulating, designing optimizing, and displaying hybrid drill bits
First Claim
1. A computer implemented method of designing a hybrid drill bit, comprising:
- simulating the hybrid drill bit drilling in an earth formation, wherein the simulating comprises;
incrementally rotating the hybrid drill bit;
determining a position of at least one fixed cutting element of the hybrid drill bit after the incremental rotation;
determining a position of at least one roller cone cutting element of the hybrid drill bit after the incremental rotation;
determining a portion of the earth formation cut by the at least one fixed cutting element and the roller cone cutting element; and
removing the cut portion from the simulating;
adjusting a value of at least one design parameter for the hybrid drill bit based on the simulating;
repeating the simulating and adjusting to change a simulated performance of the hybrid drill bit, until a desired set of bit design parameters is obtained; and
outputting an optimized hybrid drill bit design based on the simulating, adjusting, and repeating.
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Accused Products
Abstract
A hybrid drill bit is modeled, simulated, designed, optimized, and displayed. The hybrid drill is modeled based on input bit design parameters. The modeled hybrid drill bit is then simulated as drilling an earth formation, where at least a portion of the simulation may be graphically displayed so as to allow a user to adjust one or more parameters of the hybrid drill bit, drill string, and/or earth formation. Formation interactions between a fixed cutting element of the hybrid drill bit and the earth formation and between a roller cone cutting element of the hybrid drill bit and the earth formation are determined based on models developed using, for example, laboratory-based formation interaction tests. Simulation of the modeled hybrid drill bit may be selectively repeated so as to allow a user to adjust one or more design parameters of the hybrid drill bit to affect a simulated drilling characteristic. Such designing of the hybrid drill bit may be performed until one or more bit design parameters are accepted as being optimized.
3 Citations
18 Claims
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1. A computer implemented method of designing a hybrid drill bit, comprising:
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simulating the hybrid drill bit drilling in an earth formation, wherein the simulating comprises; incrementally rotating the hybrid drill bit; determining a position of at least one fixed cutting element of the hybrid drill bit after the incremental rotation; determining a position of at least one roller cone cutting element of the hybrid drill bit after the incremental rotation; determining a portion of the earth formation cut by the at least one fixed cutting element and the roller cone cutting element; and removing the cut portion from the simulating; adjusting a value of at least one design parameter for the hybrid drill bit based on the simulating; repeating the simulating and adjusting to change a simulated performance of the hybrid drill bit, until a desired set of bit design parameters is obtained; and outputting an optimized hybrid drill bit design based on the simulating, adjusting, and repeating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification