Natural gas before the natural gas can be transported. Natural gas extracted from oil wells is called casinghead gas (whether or not truly produced up the annulus and through a casinghead outlet) or associated gas. The natural gas industry is extracting an increasing quantity of gas from challenging resource types: sour gas, tight gas, shale gas, and coalbed methane. There is some disagreement on which country has the largest proven gas reserves. Sources that consider that Russia has by far the largest proven reserves include the US CIA (47 600 km³), the US Energy Information Administration (47 800 km³), and OPEC (48
Natural gas vehicle what really took off due to its inherently far lower capital costs. Compressed Natural Gas is a domestic energy produced in Western parts of India. In India, most CNG vehicles are dual fueled, which means they can run both on CNG and gasoline. This makes it very convenient and users can drive long distances without worrying about availability of natural gas (as long as gasoline is available). As of December 2010 India had 1,080,000 NGVs and 560 fueling stations, many of the older ones being LPG rather than CNG. In addition, it is thought that more illegally converted LPG autos