Multiscale evaluation of a thin-bed reservoir

A thin-bed laminated shaly-sand reservoir of the Miocene formation was evaluated using two methods: high resolution microresistivity data from XRMI tool and conventional well logs. Based on data, Earth model defined in a way that allowed analyzed interval to be subdivided into thin layers sandstones, mudstones, claystones. Theoretical logs gamma ray, bulk density, horizontal vertical resistivity were calculated based forward modeling method describe petrophysical properties individual beds calculate clay volume, porosity, water saturation. The relationships amongst contents minerals established XRD neighboring wells; hence, high-resolution lithological evaluated. Predicted curves estimated volumes used as an input multimineral solver assumed recalculated, reconstructed compared with predicted curves. adjusted during several runs minimalize error between recalculated variables. Another approach electrofacies unsupervised self-organizing maps. As input, used. Then, facies effective obtained results and, finally, thickness methods.