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

fYear

2011

fDate

3-8 July 2011

Firstpage

2499

Lastpage

2502

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5997031

Filename

5997031