Understanding coalbed methane

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CNG – Compressed Natural Gas # LNG – Liquefied Natural Gas # Global coalbed methane reserves: 260 trillion cubic meters； # The resource volume of shallow coalbed methane within 2,000 meters underground in our country is 36.7 trillion cubic meters, of which the coalbed methane reserves suitable for development account for over 60% of the total proven coalbed methane reserves ； # It is estimated that 1,000 cubic meters of coalbed methane is equivalent to one ton of standard coal, with a calorific value of over 30 megajoules per cubic meter. Based on this, China’s coalbed methane reserves are estimated to be equivalent to 35 billion tons of standard coal or 24 billion tons of oil. # Coalbed methane extracted through vertical drilling prior to coal mining has a methane content of over 95% ； # Coalbed methane released during coal mining (oxygen-containing coalbed methane) has a methane content of only 20–75%; due to safety concerns, oxygen removal is required before its use. # The volume of liquefied coalbed methane is reduced by 625 times; a standard liquefied gas tank truck with a capacity of 35 cubic meters can transport 21,000 standard cubic meters of coalbed methane, which is equivalent to the total daily output of 8 standard gas wells. # The feasibility study report for the 50,000 tons per year coalbed methane liquefaction project, which utilizes the coalbed methane deoxygenation patent technology developed by Southwest Research Institute, has passed the preliminary review by Shanxi Guorui Investment Co., Ltd. Chemical Engineering 080805: Coalbed methane liquefaction project of Jinmei Group (Jiafeng Town, Qinshui County), liquefaction at –162°C under atmospheric pressure ； The volume is reduced by 625 times. #The cost of coalbed methane extraction is approximately 1 yuan per cubic meter ；