Title :
Simulation of electromagnetic logging-while-drilling tools using vector finite element methods
Author :
Zhang, Zhong Qing ; Zhang, Xue ; Mu, Linxue
Author_Institution :
Dept. of Ocean Sci. & Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A vector finite element method (FEM) combined with the algebraic multigrid (AMG) method and a multifrontal solver is used to simulate the response of a electromagnetic logging-while-drilling (LWD) tool in a three dimensional (3D) inhomogeneous medium. A layered medium with a dipping borehole and invaded zones is partitioned into tetrahedrons. Each tetrahedron has six vector edge elements. The algorithm is applied to simulate the shoulder effect, the dipping angle effect, the eccentric effect, and the borhole effect.
Keywords :
drilling (geotechnical); drilling machines; finite element analysis; vectors; well logging; algebraic multigrid method; borehole dipping; borhole effect; dipping angle effect; eccentric effect; electromagnetic logging-while-drilling tool; layered medium; multifrontal solver; shoulder effect; tetrahedrons; three dimensional inhomogeneous medium; vector edge element; vector finite element method; Computational modeling; Nonhomogeneous media; algebraic multigrid method; logging-while-drilling; multifrontal method; vector finite element method;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5997031
