Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization
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Abstract
A method for simulating a drilling tool assembly having a drill string and a drill bit. The method includes simulating a dynamic response of the drill string; simulating a dynamic response of the drill bit; and resolving the dynamic response of the drill string and the dynamic response of the drill bit into a dynamic response of the drilling tool assembly.
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Citations
36 Claims
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1-28. -28. (canceled)
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29. A method for simulating a drilling tool assembly having a drill string and a drill bit, comprising:
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simulating a dynamic response of the drill string;
simulating a dynamic response of the drill bit; and
resolving the dynamic response of the drill string and the dynamic response of the drill bit into a dynamic response of the drilling tool assembly. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A method for designing a drill string of a drilling tool assembly, comprising:
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defining initial drilling tool assembly design parameters;
simulating a dynamic response of the drill string of the drilling tool assembly;
simulating a dynamic response of a drill bit of the drilling tool assembly;
resolving the dynamic response of the drill string and the dynamic response of the drill bit into a dynamic response of the drilling tool assembly;
adjusting a value of at least one of the drill string design parameters;
repeating the simulating and the adjusting a selected number of times;
evaluating the dynamic responses of the drilling tool assembly; and
based on the evaluating, selecting desired drill string design parameters.
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36. A method for designing a drill string of a drilling tool assembly, comprising:
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defining initial drilling tool assembly design parameters;
simulating a dynamic response of the drill bit of the drilling tool assembly;
simulating a dynamic response of a drill string of the drilling tool assembly;
resolving the dynamic response of the drill string and the dynamic response of the drill bit into a dynamic response of the drilling tool assembly;
adjusting a value of at least one of the drill bit design parameters;
repeating the simulating and the adjusting a selected number of times;
evaluating the dynamic responses of the drilling tool assembly; and
based on the evaluating, selecting desired drill bit design parameters.
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Specification