Geography News

COAL BED METHANE (CBM)

Written by Talent KAS

Related Topic in KAS Prelims Syllabus:

Geography [Paper-I]: Marine and Continental Resources, Physical, Social, Economic Geography of World, India and Kerala

News

Ministry of Coal recently directed the state-run coal miner Coal India Limited (CIL) to produce 2 MMSCB (million metric standard cubic metres) per day of coalbed methane (CBM) gas in the next 2 to 3 years.

What is Coal Bed Methane (CBM)?

  • Like shale gas, CBM is extracted from unconventional gas reservoirs — where gas is extracted directly from the rock that is the source of the gas (coal in case of CBM).
  • It is formed during the process of coalification, the transformation of plant material into coal
  • The methane is held underground within the coal and is extracted by drilling into the coal seam and removing the groundwater.
  • The resulting drop in pressure causes the methane to be released from the coal.

CBM Reserves in India

  • India’s CBM resources are estimated at around 92 trillion cubic feet (TCF), or 2,600 billion cubic metres (BCM).
  • The country’s coal and CBM reserves are found in 12 states of India, with the Gondwana sediments of Eastern India holding the bulk.
  • The Damodar Koel valley and Son valley are prospective areas for CBM development, with CBM projects existing in Raniganj South, Raniganj East and Raniganj North areas in the Raniganj coalfield, the Parbatpur block in Jharia coalfield and the East and West Bokaro coalfields.

Benefits

CBM can be used for power generation, as compressed natural gas (CNG) auto fuel, as feedstock for fertilisers, industrial uses such as in cement production, rolling mills, steel plants, and for methanol production.

[Source: Indian Express]

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