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 transmission system of Ukraine Natural gas transmission system of Ukraine The natural gas transmission system of Ukraine is a complex of natural gas transmission pipelines for gas import and transit in Ukraine. It is one of the largest gas transmission systems in the world. The system is linked with natural gas transmission systems of Russia and Belarus on one hand, and with systems of Poland, Romania, Moldova, Hungary and Slovakia on other hand. The system is owned by Government of Ukraine and operated by Ukrtransgaz. Some local transmission lines together with distribution sets are owned by regional gas companies. The development of Ukrainian gas