This book investigates the methodologies and challenges in assessing the world's natural gas and oil resources. It provides an overview of the techniques used by geoscientists and engineers to estimate the quantity and accessibility of these vital energy reserves. The work aims to clarify the complexities involved in resource evaluation, from initial exploration to the final estimation of recoverable volumes.

This text is recognized as a technical overview of resource assessment methodologies within the energy sector. It is likely to be of interest to geoscientists, petroleum engineers, and policy analysts involved in energy resource management. The book provides a structured approach to understanding the complexities of estimating global natural gas and oil reserves.