This book is a comprehensive overview of shale gas science and engineering, covering key facets such as the geological and geochemical characteristics of shale gas reservoirs, gas transport mechanisms in shale nanopores, mathematical models and case studies for gas production, and enhancing gas recovery methods. The author presents a systematic summarization of gas flow and production in shale gas reservoirs from micropore to macro-reservoir scale. The research methods encompass experiments, well-testing, numerical simulation, and mathematical derivation. Designed primarily as a reference work for petroleum industry practitioners and researchers, this book is equally valuable for new entrants and seasoned professionals. It is also an excellent resource for undergraduate and postgraduate courses and of interest to libraries at universities offering gas, oil, and general energy courses. Whether you're seeking an introduction to the field or a detailed exploration of advanced concepts, this book provides a valuable and complete guide to shale gas science and engineering.