f Effect of brine and gas saturation on acoustic velocity in some pliocene and miocene reservoir rocks, Hungary

37 core samples were collected from three different gas bearing zones in some oil and gas fields in Hungary. These samples are belonging in age to the Upper - Lower Pliocene and Miocene. Out of them 31 core samples were mainly sandstones, while the rest are carbonates. These samples were conducted to laboratory acoustic measurements of both compressional and shear wave velocity using the Sonic Viewer_170 OYO Instruments. The acoustic velocities were measured at frequencies of 63 Khz and 33 Khz for compressional and shear wave respectively. All samples were subjected to complete petrophysical investigations including porosity, permeability and pore size distribution.