IJCCE  Vol.7 No.2 , May 2018
Economics of Coalbed Methane in North West Spain
Abstract: Coal during its carbonization process produces a gas. This gas, mainly formed by methane, can be used. The use of CBM (Coal bed methane) as an energetic resource is not much known in Spain. This work is the first step to enhance the development of this resource in Castilla y León. A theoretical review and a state of the art description have been carried out, taking into account all the factors that can influence in the development of a CBM project. Then CBM resources have been quantified by Castilla y León accurately for every coal bed. After that, technical feasibility has been used to evaluate total amount of gas that can be recovered. The last step was to evaluate economic feasibility to know how much gas could be economically profitable. This paper covers the economic factor and exploitation options of CBM in Castilla y León, considering technical parameters together with costs and economic requirements for the tow most promising areas in north-west Spain. The main findings include that a CBM system would be feasible in Guardo-Barruelo, however, the economic feasibility will be limited to long operation time of the wells and an increase of the prices of natural gas. In North Leon, the results show a high profitability even under low natural gas prices.
Cite this paper: Gutiérrez, J. and García, R. (2018) Economics of Coalbed Methane in North West Spain. International Journal of Clean Coal and Energy, 7, 21-38. doi: 10.4236/ijcce.2018.72002.

[1]   Creedy, D.P. (2001) A Review of the Worldwide Status of Coalbed Methane Extraction and Utilisation. Department of Trade and Industry’s Cleaner Coal Technology Transfer Programme, ETSU.

[2]   Dong, J. (2015) Coal Mine Methane Control Cost and Full Cost: The Case of the Luling Coal Mine, Huaibei Coalfield, China. Journal of Natural Gas Science and Engineering, 26, 290-302.

[3]   IEA CCC. (2006) Power Projects Using Methane from Coal Mines.

[4]   Creedy, D. and Tilley, H. (2003) Coalbed Methane Extraction and Utilization. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 217, 19-25.

[5]   IGME. (1995) Actualización del Inventario de Recursos Nacionales de Carbón: Guardo-Barruelo.

[6]   Aitemin. (2000) Drenaje y desgasificación de grisú en capas de carbón potentes y verticales explotadas por subniveles horizontales con sutiraje. Memoria 1999. Madrid, Espana, 27-28.

[7]   Aitemin. (2000) Reducción de la contaminación medioambiental producida por las emisiones de metano en minas abandonadas. Memoria 1999. Madrid, Espana, 41-42.

[8]   IEA. (2018) International Energy Outlook.

[9]   Boyer, C. (2004) Understanding the Impact of Technology on Full Cycle CBM Financial Viability. The Successful Commercialization of Global Coalbed and Coalmine Methane Projects, London.

[10]   US DOE. (2006) The Economics of Powder River Basin Coalbed Methane Development. Advanced Resources International, Inc.

[11]   Eddy, G.E. (1982) Relationship of Methane Content of Coal Rank and Depth: Theoretical vs. Observed. Proceedings of the SPE Unconventional Gas Recovery Symposium, Pittsburgh, 16-18 May 1982.

[12]   Gray, I. (1987) Reservoir Engineering in Coal Seams, the Physical Process of Gas Storage and Movement in Coal Seams. SPE 12514, Reservoir Engineering, 28-40.

[13]   Laubach, S.E. (1997) Characteristics and Origins of Coal Cleat: A Review. International Journal of Coal Geology, 35, 175-207.

[14]   Cardott, B.J. (2001) Coalbed Methane Activity in Oklahoma 2001. Oklahoma Coalbed-Methane Workshop: Oklahoma Geological Survey, Open-File Report of 2-2001, 93-139.

[15]   Weniger, S., et al. (2016) Characterizing Coal Cleats from Optical Measurements for CBM Evaluation. International Journal of Coal Geology, 154-155, 176-192.

[16]   Gas Research Institute. (1991) Coalbed Methane of Western North America: Guidebook for the Rocky Mountain. Association of Geologists Fall Conference and Field Trip, 17-20 September, Glenwood Springs, Colorado.

[17]   Arenas, G. (2004) Development of Gas Production Type Curves for Coalbed Methane Reservoirs. Department of Petroleum and Natural Gas Engineering of West Virginia.