MODELE SEJSMICZNE MIOCEŃSKICH PUŁAPEK STRUKTURALNYCH I STRATYGRAFICZNYCH NASYCONYCH WĘGLOWODORAMI W ZAPADLISKU PRZEDKARPACKIM

Abstract

SEISMIC MODELS OF STRATIGRAPHIC AND STRUCTURAL TRAPS IN MIOCENE STRATA OF THE CARPATHIAN FOREDEEPAbstract. Two 2-D models of selected gas traps in Miocene strata of the Carpathian Foredeep were constructed. The occurrence of natural gas lowers the velocity of seismic waves. Seismic images were modelled for varioces by variouses magnitudes of the lowering of seismic wave velocity. The number of gas-bearing layers was also different. Zero-offset seismic sections as well as field records were modelled. Field records were subsequently processed to seismic sections. It was shown how gas indicators manifest themselves on seismic images in conditions characteristic of Miocene trap structures of the Carpathian Foredeep.