Title :
3-D finite-difference analysis of electromagnetic response for measurement while drilling
Author :
Wang, Tsili ; Signorelli, Jack
Author_Institution :
Baker Atlas, Houston, TX, USA
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1016756
