TY - JOUR
T1 - Modeling of the Dielectric Logging Tool at High Frequencies
T2 - Applications and Results
AU - Chew, Weng Cho
N1 - Funding Information:
Manuscript received July 31, 1987; revised January 7, 1988. This work was supported in part by National Science Foundation Grant NSF ECS 85- 5291, Schlumberger, Mobil, and ARCO. The author is with the Department of Electrical and Computer Engineering, University of Illinois, Urbana, IL 61801. IEEE Log Number 8821042.
PY - 1988/7
Y1 - 1988/7
N2 - The high-frequency dielectric logging tool is useful in electromagnetic well logging, because by measuring the dielectric constants of rock formations at high frequencies (1 GHz), the water saturation of rocks could be inferred without knowing the water salinity in the rocks. In this paper, we present the results of a theoretical model presented in the previous paper. We use our theoretical model to study the behavior of such a tool across geological sedimentary beds. We also study the effect of using different polarizations on the measurement. Furthermore, we study the standoff and mudcake effects that reflect on the depth of investigation of such a tool. Finally, we study the use of borehole compensation modes in the measurements. We find that the TE polarization is more robust than the TM polarization in terms of mudcake and standoff effects. Also, the standoff effect affects the measurement more severely than the mudcake effect. Shorter receiver spacings give rise to a higher resolution in the measurement. Borehole compensation results in a slight loss of resolution, and horns in the logs are removed.
AB - The high-frequency dielectric logging tool is useful in electromagnetic well logging, because by measuring the dielectric constants of rock formations at high frequencies (1 GHz), the water saturation of rocks could be inferred without knowing the water salinity in the rocks. In this paper, we present the results of a theoretical model presented in the previous paper. We use our theoretical model to study the behavior of such a tool across geological sedimentary beds. We also study the effect of using different polarizations on the measurement. Furthermore, we study the standoff and mudcake effects that reflect on the depth of investigation of such a tool. Finally, we study the use of borehole compensation modes in the measurements. We find that the TE polarization is more robust than the TM polarization in terms of mudcake and standoff effects. Also, the standoff effect affects the measurement more severely than the mudcake effect. Shorter receiver spacings give rise to a higher resolution in the measurement. Borehole compensation results in a slight loss of resolution, and horns in the logs are removed.
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U2 - 10.1109/36.3042
DO - 10.1109/36.3042
M3 - Article
AN - SCOPUS:0024047991
SN - 0196-2892
VL - 26
SP - 388
EP - 398
JO - IEEE Transactions on Geoscience and Remote Sensing
JF - IEEE Transactions on Geoscience and Remote Sensing
IS - 4
ER -