Natural gas is an essential constituent of the world's reserve of energy and a crucial basis of numerous bulk chemicals and specialty chemicals. It is one of the cleanest, safest, and most beneficial of all energy sources, and facilitates in meeting the world's increasing needs for cleaner energy for the future. However, exploring, generating and bringing gas to the user or transforming gas into desired chemicals is a systematical engineering project, and every step needs thorough understanding of gas and the encircling environment. Any developments in the method link could lead to a paradigm shift in gas industry. With state-of-the-art inputs by known experts of this field, this book targets natural gas resources and production.