Options of Post-Mine Utilization of Hard Coal Deposits Dipl.-Geol. Ralph Schlüter (DMT GmbH, Essen) MAEGS - 15 Tallinn, Estonia, 16. - 20.09.2007 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 1
Options of Utilization of Hard Coal Deposits 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 2
Options of Utilization of Hard Coal Deposits Abandoned Mine Methane Coalbed Methane CO 2 -Sequestration with Enhanced Coalbed Methane Natural Gas Storage Underground Coal Gasification Thermal Use of Mine Water 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 3
Abandoned Mine Methane Gas Utilization in Abandoned Mining Areas extraction unit gas engine (www.ivg.de) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 4
Abandoned Mine Methane Self-steering Directional Drilling Tool 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 5
Abandoned Mine Methane AMM fuelled Combined Heat & Power Units (Ruhr) (courtesy of A-TEC, Minegas, G.A.S.) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 6
Abandoned Mine Methane 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 7
Coalbed Methane Transport Process of Coalbed Methane Gas (after Kuuskraa & Boyer) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 8
Coalbed Methane US Production and Deposits (from S. H. Limerick, 2005) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 9
Coalbed Methane 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 10
CO 2 -Sequestration / ECBM CO 2 -Storage Options CO 2 -Storage options 6 1 5 3 4 2 1. Enhanced Oil Recovery 2. Enhanced Coal Bed Methane (ECBM) 3. Depleted oil and gas deposits 4. Deep unmineable coal seams 5. Large cavities (e.g. abandoned mines) 6. Deep saline aquifers (Modified after ) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 11
CO 2 -Sequestration / ECBM Advantages of CO 2 -sequestration in coal seams Adsorption Just like methane, CO 2 is adsorbed to the inner surface of the coal. This may considerably reduce the risk of long term leakages. CO 2 could replace CH 4 in the coal matrix and simultaneously enhance CBM production (CO 2 -ECBM). Capacity The amount that could theoretically be stored in coal is quite substantial, with estimated world-wide potentials of 40 260 Gt CO 2. Sealing In most deposits, coal is associated with multiple layers of claystone acting as seals below and above CO 2 loaded seams. Distribution In many cases, the correspondence of industrial point sources and coal deposits as potential CO 2 sinks is very high, avoiding long transport distances. 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 12
CO 2 -Sequestration / ECBM CO 2 storage project in the Silesian Coal Basin of Poland Fertilizer plant 3.Injection equipment Liquid CO 2 storage Tanks (60 tonnes) MS-4 production well (existing) MS-1 production well (existing) ± 300 m Miocene MS-3 injection well (to be drilled) CO 2 150 m / 450 ft CBM 1200 m Carboniferous 1. Injection 2. Production (Krooss, Busch & Littke, 2007) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 13
CO 2 -Sequestration / ECBM Production History Allison Unit (New Mexico) (from Reeves & Oudinot, 2005) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 14
CO 2 -Sequestration / ECBM Criteria for successful CO 2 -ECBM projects Adequate permeability Suitable coal geometry Simple structure Homogeneous and confined coal seams Adequate depth Suitable gas saturation conditions Ability to dewater the formation Coal rank 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 15
CO 2 -Sequestration / ECBM 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 16
CO 2 -Sequestration / ECBM Storage of CO 2 -loaded waste in coal mines mining direction longwall pipeline for transport of CO 2 - mining waste suspension pipeline for transport of barrage building material 5 m 20 m 5 m 250 m disposal ground 5 m drag pipes after Jäger et al. (1990), modified up to 1000 m drift corollary barrage (Kühn et al., 2006) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 17
Gas-Storage in Mines Location of Leyden Mine (Colorado) (US EPA, Leyden Facility Technical Review, 2004) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 18
Gas-Storage in Mines Pressure Development in Belgium Gas Storage Facility (Piessens & Dusar, 2004) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 19
Gas-Storage in Mines 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 20
Underground Coal Gasification Scheme of UCG combined with CO 2 -Storage and ECBM (www.erp.ac.uk, 2006) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 21
Underground Coal Gasification 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 22
Thermal Use of Minewater Zollverein School of Management and Design (www.arclife.de/arcguide) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 23
Thermal Use of Minewater 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 24
Thermal Use of Minewater Minewater-Project in Springhill (Nova Scotia, Canada) (from Caddet energy efficiency, 1992) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 25
Thermal Use of Minewater Heerlen Minewater Project (Demollin-Schneiders, www.senternovem.nl) 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 26
Options of Post-Mine Utilization of Hard Coal Deposits Thank you for your attention! 17.09.2007 Options of Post-Mine Utilization of Hard Coal Deposits Page 27