Abstract

An Indian offshore limestone reservoir which has been on production since last 18 years has been studied to address the problems of declining pressure, rising water cut, and poor productivity in certain areas. The reservoir characterization was taken up with an objective to diagnose the problems, suggest the remedial measure to reduce water cut to a manageable limit and identify prospective areas for infill drilling to improve recovery. The objective was met to a great extent by analyzing and integrating recently acquired 3D seismic data and petro-physical properties. The studies were carried out in two categories viz. structural elements delineation and reservoir description. The seismic attribute intensive approach at almost every step of study was adopted to optimize the results