Modeling and designing of well drilling system that accounts for vibrations
First Claim
1. A method of modeling drilling equipment comprising:
- constructing two or more differing design configurations, wherein each of the design configurations represents at least a portion of a bottom hole assembly (BHA);
identifying operating parameters for the two or more differing design configurations;
selecting mathematical boundary conditions wherein the two or more differing design configurations are subjected to identical system excitation;
calculating lateral beam bending results using a computer processor accessing non-transitory computer readable media, for each of the two or more differing design configurations using a model that includes the identified operating parameters and the selected mathematical boundary conditions calculating, using the computer processor accessing non-transitory computer readable media, for each of the two or more differing design configurations using a model that includes the identified operating parameters and the selected mathematical boundary conditions, one or more performance indices that characterize a determined BHA vibration performance of the two or more differing design configurations, wherein the one or more performance indices comprise at least one of an end-point curvature index, a BHA strain energy index, an average transmitted strain energy index, a transmitted strain energy index, a root-mean-square BHA sideforce index, a root-mean-square BHA torque index, a total BHA sideforce index, a total BHA torque index, and any mathematical combination thereof;
comparing the calculated results for the two or more differing design configurations; and
displaying the calculated results of at least one of the two or more differing design configurations.
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Abstract
A method and apparatus associated with the production of hydrocarbons is disclosed. The method, which relates to modeling of drilling equipment, includes constructing one or more design configurations for at least a portion of a bottom hole assembly (BHA) and calculating results from each of the one or more design configurations. The calculated results of the modeling may include one or more performance indices that characterize the BHA vibration performance of the design configurations for operating parameters and boundary conditions that are substantially the same or may be different. These results are then simultaneously displayed for a user to facilitate design selection. The selected BHA design configuration may then be utilized in a well construction operation and thus associated with the production of hydrocarbons.
67 Citations
60 Claims
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1. A method of modeling drilling equipment comprising:
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constructing two or more differing design configurations, wherein each of the design configurations represents at least a portion of a bottom hole assembly (BHA); identifying operating parameters for the two or more differing design configurations; selecting mathematical boundary conditions wherein the two or more differing design configurations are subjected to identical system excitation; calculating lateral beam bending results using a computer processor accessing non-transitory computer readable media, for each of the two or more differing design configurations using a model that includes the identified operating parameters and the selected mathematical boundary conditions calculating, using the computer processor accessing non-transitory computer readable media, for each of the two or more differing design configurations using a model that includes the identified operating parameters and the selected mathematical boundary conditions, one or more performance indices that characterize a determined BHA vibration performance of the two or more differing design configurations, wherein the one or more performance indices comprise at least one of an end-point curvature index, a BHA strain energy index, an average transmitted strain energy index, a transmitted strain energy index, a root-mean-square BHA sideforce index, a root-mean-square BHA torque index, a total BHA sideforce index, a total BHA torque index, and any mathematical combination thereof; comparing the calculated results for the two or more differing design configurations; and displaying the calculated results of at least one of the two or more differing design configurations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 53, 54, 55, 59, 60)
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23. A method of modeling drilling equipment comprising:
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constructing two or more differing design configurations representing a portion of a bottom hole assembly (BHA); identifying operating parameters and mathematical boundary conditions; determining BHA vibration performance of the two or more design configurations using a model that includes the identified operating parameters and the identified mathematical boundary conditions, wherein each of the two or more differing design configurations is subjected to identical excitation for all operating parameters; calculating using a computer processor accessing non-transitory computer readable media, one or more performance indices that characterize the determined BHA vibration performance of the two or more design configurations, wherein the one or more performance indices comprise at least one of an end-point curvature index, a BHA strain energy index, an average transmitted strain energy index, a transmitted strain energy index, a root-mean-square BHA sideforce index, a root-mean-square BHA torque index, a total BHA sideforce index, a total BHA torque index, and any mathematical combination thereof; and displaying at least one of the calculated one or more performance indices of the two or more differing design configurations. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 56, 57, 58)
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39. A modeling system comprising:
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a computer processor; a memory coupled to the processor; and a set of computer readable instructions accessible by the processor, wherein the set of computer readable instructions are configured to enable a process that comprises; constructing two or more differing design configurations, wherein each of the design configurations represents at least a portion of a bottom hole assembly (BHA); identifying operating parameters for the two or more differing design configurations; selecting mathematical boundary conditions wherein the two or more differing design configurations are subjected to identical system excitation; calculating results for each of the two or more differing design configurations using a lateral beam bending model that includes the identified operating parameters and the selected mathematical boundary conditions calculating results, for each of the two or more differing design configurations, one or more performance indices that characterize a determined BHA vibration performance of the two or more differing design configurations, wherein the one or more performance indices comprise at least one of an end-point curvature index, a BHA strain energy index, an average transmitted strain energy index, a transmitted strain energy index, a root-mean-square BHA sideforce index, a root-mean-square BHA torque index, a total BHA sideforce index, a total BHA torque index, and any mathematical combination thereof; comparing the calculated results for the two or more differing design configurations; and displaying the calculated results of at least one of the two or more differing design configurations. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification