Title :
An UWB EM borehole imaging system
Author :
Guo, Chen ; Liu, Richard C.
Author_Institution :
Chang´´an Univ., Xi´´an, China
Abstract :
An ultra-wideband (UWB) electromagnetic (EM) short-pulsed borehole imaging method for oil-based mud (OBM) application is introduced in this paper. The short-pulsed borehole imaging system offers more advantages comparing to the conventional dielectric or resistivity imaging tools. A high resolution in both vertical and horizontal directions for well-bore cracks, rugosity, and dielectric dispersion of formations can be obtained by radiating an EM pulse signal with a center frequency of 1.2GHz into well-bore through a wideband antenna system. Transmission Line Matrix (TLM) numerical simulation results are presented to verify the performance of the proposed EM short-pulsed imaging system.
Keywords :
drilling (geotechnical); numerical analysis; permittivity; transmission line matrix methods; ultra wideband antennas; UWB EM borehole imaging system; dielectric dispersion; dielectric imaging tools; oil-based mud application; resistivity imaging tools; transmission line matrix numerical simulation; ultra-wideband electromagnetic short-pulsed borehole imaging method; wideband antenna system; Antenna measurements; Antennas; Image resolution; Imaging; Signal resolution; Time domain analysis; Wideband;
Conference_Titel :
Ultra-Wideband (ICUWB), 2010 IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-5305-4
Electronic_ISBN :
978-1-4244-5306-1
DOI :
10.1109/ICUWB.2010.5615373
