Abstract—Adsorption of methane gas is affected by coal facies, as a consideration when exploring Coal Bed Methane (CBM). The Binuang area located in South Kalimantan is an area where coal carrier formations, namely the Warukin Formation and the Tanjung Formation, are well exposed. Sampling of coal was carried out using a channel sampling method from the youngest coal in the Warukin Formation to the oldest coal in the Tanjung Formation. The methodology applied in this research uses mineral analysis and adsorption of methane gas to find out the coal facies using a diagram conducted by previous researchers. There are two types of coal facies in the Warukin Formation, namely coal facies delta plain wet forest swamp and delta plain fen. In Tanjung formation, the coal facies that develops is delta plain wet forest swamp and delta plain fen. Changes in coal facies will cause the different ability of methane gas adsorption. Coal with a depositional environment (facies) of Delta wet plain swamp has more excellent adsorption of methane compared to adsorption of methane gas in delta plain fen facies.

Index Terms—coal facies, gas adsorption, peat, Tanjung Formation, Warukin Formation

Cite:Sugeng, Sari Bahagiarti Kusumayudha, Heru Sigit Purwanto, Basuki Rahmad, and Nanda Ajeng Nurwantari, "The Role of Coal Facies to Adsorption of Methane Gas: Case Study on Warukin and Tanjung Formation Binuang Area, South Kalimantan Province," International Journal of Geology and Earth Science, Vol. 6, No. 2, pp. 20-26, June2020. doi: 10.18178/ijges.6.2.20-26