Patent ID: 8504342
Filing Date: 2013-08-06
Classification: E21B,G06F

Abstract:
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.