BUILDING OF THERMOPHYSICAL ROCK PROPERTIES FROM ELECTROMAGNETIC SOUNDING DATA AND LABORATORY MEASUREMENTS
V.V. Spichak, A.G. Goidina, O.K. Zakharova
Geoelectromagnetic Research Centre of the Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Troitsk, Moskovskaya obl., 108840, Russia
Keywords: Thermal conductivity, heat flow, specific heat capacity, magnetotelluric sounding, geothermal reservoir, artificial neural network
Abstract
Possibilities to construct the sections of thermal conductivity, specific heat capacity, as well as heat flow density at the surface, using electromagnetic sounding data and laboratory measurements on core samples, have been studied. It has been shown that neural network prediction of thermophysical properties from electromagnetic sounding data and laboratory measurements enables estimating these properties not only below boreholes but also in the interwell space, with relative accuracy around 6-10 %. Sections of «dry» and «warm» thermal conductivity, specific heat capacity and a profile of the heat flow density at the surface of the study area, along magnetotelluric sounding profile, have been built.
|
