This ninth and final volume in the series, Advances in Natural Gas Engineering, covers gas injection into geological formations, one of the hottest topics in the industry, with contributions from some of the most well-known and respected engineers in the world. This timely book focuses on gas injection into geological formations and other related topics, which are very important areas of natural gas engineering and build on previous volumes. It includes information for both upstream and downstream operations, including chapters detailing the most cutting-edge techniques in acid gas injection, such as acid gas disposal, modeling, and much more. Written by some of the most well-known and respected chemical and process engineers working with natural gas today, the chapters in this important volume represent the most state-of-the-art processes and operations used in the field. Not available anywhere else, this volume is a must-have for any chemical engineer, chemist, or process engineer in the industry. Advances in Natural Gas Engineering is a series of books meant to form the basis for the working library of any engineer working with natural gas today.