Delineation of Gas Sand Reservoir Prospect in the “A” Field, Deep Water Area of Kutai Basin

Abstract Kutai basin hydrocarbon’s potential is not only in the delta area but extends to deepwater of East Kalimantan. The result integration method based on petrophysical, inversion, and seismic multiattribute aim delineate gas reservoir zone research area. rocks consist graywacke sublitharenite Upper Miocene sandstone with an average shale volume content 19%, porosity 23%, water saturation 55%. reflected Vp/Vs ratio range 1.58 1.8, Poisson value 0.17 0.3 GPa, incompressibility 8 22 Gpa*g/cc. distribution indicated by low acoustic impedance anomaly 4000 7500 m/s*gr/cm3, high RMS attribute 2000 10000, volume, porosity, will be estimated using multi-attribute linear regression probabilistic neural network methods that concentrated upper slope fan southern