Adaptive Dual-Parameter Deconvolution for High-Frequency Electromagnetic-Wave Logging

A high-frequency electromagnetic-wave logging (HFEL) tool has been developed to detect the dielectric constant and resistivity of the sedimentary formation by measuring the phase difference and amplitude ratio synchronously. The single-parameter deconvolution method is a convenient tool for enhancing the vertical resolution of the curves and reshaping the curves themselves. This paper attempts to resolve the two parameters, the dielectric constant and the resistivity, which are employed in the deconvolution method from two responses: the phase difference and amplitude ratio. First, an adaptive dual-parameter deconvolution method for the HFEL dielectric constant and resistivity measurements is devised to enhance the vertical resolution of the tool and to more accurately extract the formation parameters, namely, the dielectric constant and resistivity. The advantages of this method are revealed in the numerical experiments on the synthetic and actual logging data. The adaptive dual-parameter deconvolution can be informative in the application of the deconvolution.