Determining the elastic moduli of the third order for sedimentary rocks based on well-logging data

Abstract

The method of determining the values of elastic moduli of the third order of sedimentary series of rocks is developed based on a complex of well-logging data. The calculation algorithm is based on the theory of elastic wave propagation in deformed solids, seismic-geological modeling, and the cluster analysis of well data on artificial neural networks. The elastic moduli of sedimentary series of rocks of oil- and gas-bearing structures of the Gunashli of the South Caspian Basin (SCB) are determined using the offered method. The numerical values of Poisson’s ratio are also determined for these rocks. The inaccuracies of the results obtained within the simplified theories are revealed in this example without considering the current geodynamic changes.