Abstract
The South Caspian Basin is known for its significant hydrocarbon reserves, particularly in sandstone reservoirs. Accurate reservoir characterization and evaluation are crucial for this region's successful exploration and production activities. Choosing the appropriate well logging suite is vital decision in obtaining comprehensive data on reservoir properties, including lithology, porosity, permeability, and fluid saturation. The paper focuses on identifying the best well-logging suite to evaluate sandstone reservoirs in the South Caspian Basin effectively. Our research aims to compare and analyze different well-logging techniques to determine the optimal combination and provide a list of prerequisite core measurements for accurate reservoir characterization. The study systematically evaluates commonly used well-logging tools such as gamma ray, resistivity, neutron, density, sonic logs, and infrequently used NMR logs based on the ability to provide accurate measurements, cost-effectiveness, and compatibility with the local environment. The strengths, limitations, and applicability of each logging tool in sandstone reservoirs is assessed based on existing wellbore data and core samples. Additionally, production history enhances the reliability of the findings. To attain the outlined objectives, a comprehensive literature review and case studies from analogous sandstone reservoirs is conducted. The analysis considers the regional geological setting, reservoir heterogeneity, and fluid properties. The outcomes of this research aid exploration and production companies operating in the basin in making informed decisions regarding the well-logging tool selection that will optimize data acquisition, minimize uncertainties, and improve reservoir characterization accuracy, ultimately contributing to better reservoir management practices and higher hydrocarbon recovery.
