3-D finite-difference analysis of electromagnetic response for measurement while drilling

Author

Wang, Tsili ; Signorelli, Jack

Author_Institution

Baker Atlas, Houston, TX, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

753

Abstract

This paper reports a 3D finite-difference simulation method for modeling measurement-while-drilling (MWD) antennas. Formulated in a cylindrical coordinate system, the modeling algorithm can accurately model the geometry of the tool body and, particularly, the slotted-collar antenna structure. Moreover, our numerical method can simulate the effect of magnetically permeable materials that are filled in the slots for better antenna performance. We applied the finite-difference method to analyze a 9.5-in MWD tool and showed excellent agreement with laboratory experiments.

Keywords

electromagnetic wave propagation; finite difference methods; geophysical techniques; magnetic permeability; wire antennas; 3D finite-difference simulation; MWD antennas; antenna performance; cylindrical coordinate system; geometry; geophysics; magnetically permeable materials; measurement-while-drilling antennas; modeling algorithm; numerical simulation; slotted-collar antenna structure; Antenna accessories; Antenna measurements; Drilling; Electromagnetic analysis; Electromagnetic measurements; Finite difference methods; Geometry; Magnetic materials; Slot antennas; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2002. IEEE

Print_ISBN

0-7803-7330-8

Type

conf

DOI

10.1109/APS.2002.1016756

Filename

1016756