This paper will introduce a novel source of unconventional gas, called Underground Coal Gasification (UCG), also known as In-Situ Gasification (ISG), which has been around for a long time. Due to the inexpensive cost of oil and gas, along with the abundance of coal and the low cost of mining coal seams close to the surface, UCG has not attracted a lot of attention in the past. With the demand and price for gas increasing and the move away from mining coal, UCG is becoming more attractive as a way of extracting energy from deep uneconomic coal deposits and at the same time, lowering GHG emissions and reducing the environmental impact to the landscape.
With the majority of the world's coal deposits being uneconomic to mine and with the lack of gas reserves in most countries, UCG provides the perfect alternative to produce gas from coal without the environmental impact. There are numerous advantages to extracting syngas from coal seams, when compared to conventional coal mining and to CSG (Coal Seam Gas).
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Blinderman, M. S. and Anderson, B. (2003) "Underground Coal Gasification for Power Generation: Efficiency and CO2 Emissions" presented at the 12th ICCS conference in Cairns, Queensland, Australia, in November 2003.
Bowen, B. (2008) "A Review & Future of UCG, Underground Coal Gasification" presented at the Coal Briefing conference in Purdue Calumet, Hammond, Indiana, America, in December 2008.
Burton, E., Friedmann, J. and Upadhye, R. (2008) "Best Practices in Underground Coal Gasification". Lawrence Livermore National Laboratory report, in Livermore, California, America.
Gasification Technologies Council (2012) "Underground Coal Gasification: Converting Unmineable Coal to Energy". Company report.
Mallett, C., (2015) "Underground Coal Gasification: An Overview of an Emerging Coal Conversion Technology" posted in Technology Frontiers on June 16, 2015.
Pratiwi, R., (2013) "Preliminary Study of Underground Coal Gasification (UCG) Potential in Muara Wahau Area, Kutai Basin." Presented at the Indonesian Petroleum Association 37th Annual Convention & Exhibition in Jakarta, Indonesian in May 2013.