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2013-07-29
Complex Permittivity Logging Tool Excited by Transient Signal for Mwd/Lwd
By
Progress In Electromagnetics Research M, Vol. 32, 95-113, 2013
Abstract
This paper proposes a new logging while drilling (LWD) method to evaluate rock moisture content and reservoir hydrocarbon saturation. Transient signal with broadband spectrum covering the sensitive range of fluids contained formation was used as excitation signal in the near-bit MWD system. Continuous measurement in the whole spectrum with both fluid type and saturation changes caused differences in frequency distribution of response signals and achieved integrated evaluation of formation hydrocarbon and water saturation. Linear system analysis was optimized by adding oil/water saturation parameters, and analytic calculating results were presented to verify the performance of the proposed transient MWD system. Compared with conventional wireline and LWD tools, the method presented in this paper provided higher resolution and signal intensity.
Citation
Bin Wang, Kang Li, Fanmin Kong, and Shiwei Sheng, "Complex Permittivity Logging Tool Excited by Transient Signal for Mwd/Lwd," Progress In Electromagnetics Research M, Vol. 32, 95-113, 2013.
doi:10.2528/PIERM13041105
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