Methods for designing secondary cutting structures for a bottom hole assembly
First Claim
1. A method for designing a secondary cutting structure for use in a bottom hole assembly, the method comprising:
- defining initial design parameters for the secondary cutting structure;
analyzing forces acting on the secondary cutting structure, including a vibrational response of the secondary cutting structure;
modifying at least one design element of the secondary cutting structure; and
simulating an effect of the modifying on both the secondary cutting structure and a primary cutting structure to determine if an improved condition is met.
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Abstract
A method for designing a secondary cutting structure for use in a bottom hole assembly, the method including defining initial design parameters for the secondary cutting structure and analyzing forces acting on the secondary cutting structure. Additionally, the method includes modifying at least one design element of the secondary cutting structure and simulating an effect of the modifying on both the secondary cutting structure and a primary cutting structure to determine if an improved condition is met. Also, a method for designing a drilling tool assembly, the method including defining initial drilling tool assembly design parameters including a primary cutting structure and a secondary cutting structure, and simulating a dynamic response of the drilling tool assembly. Additionally, the method includes adjusting at least one design element of the secondary cutting structure based on the dynamic response of the drilling tool assembly, determining if the adjusted design element improved a condition of the drilling, and repeating the simulating and adjusting until the condition is optimized.
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Citations
22 Claims
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1. A method for designing a secondary cutting structure for use in a bottom hole assembly, the method comprising:
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defining initial design parameters for the secondary cutting structure; analyzing forces acting on the secondary cutting structure, including a vibrational response of the secondary cutting structure; modifying at least one design element of the secondary cutting structure; and simulating an effect of the modifying on both the secondary cutting structure and a primary cutting structure to determine if an improved condition is met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for designing a drilling tool assembly, the method comprising:
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defining initial drilling tool assembly design parameters including a primary cutting structure and a secondary cutting structure; simulating a dynamic response of the drilling tool assembly; adjusting at least one design element of the secondary cutting structure based on the dynamic response of the drilling tool assembly; determining if the adjusted design element improved a condition of the drilling; and repeating the simulating and adjusting until the condition is optimized. - View Dependent Claims (12, 13, 14, 15)
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16. A method for improving secondary cutting structure for use in a bottom hole assembly, the method comprising:
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defining initial design elements for the secondary cutting structure of a bottom hole assembly; simulating the secondary cutting structure drilling in earth formation to determine cutting action of the secondary cutting structure; and adjusting at least one design element to improve the cutting action of the secondary cutting structure. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification