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Table 4 Concluded experimental EGS projects (without power generation)

From: A systematic review of enhanced (or engineered) geothermal systems: past, present and future

Project Description Start date Location Rock type Reservoir temperature (°C) Well depth (m) Stimulation methods Seismic event Fluid temperature (°C) End date Flow rate (l/s)
Falkenberg Investigation of hydraulic fracturing at shallow depth (Tenzer 2001) 1977 (Tenzer 2001) Germany (Tenzer 2001) Granite (MIT et al. 2006e) 13.5 (Kappelmeyer and Jung 1987) 500 (Tenzer 2001) Hydraulic fracturing (Tenzer 2001) Microseismic (MIT et al. 2006e) Unknown 1986 (Tenzer 2001) 0.2 to 7 (Kappelmeyer and Jung 1987) (test)
Genesys Horstberg Testing of new single well concepts at an abandoned gas well (BGR 2012a) 2003 (BGR 2012b) Germany (BGR 2012a) Sedimentary (BGR 2012a) 150 (ENGINE 2012) 3,800 (ENGINE 2012) Hydraulic fracturing (BGR 2012a) No measured event (Kreuter 2011) 115 (Tenzer 2001) 2007 (estimation) (BGR 2012b) 10 to 20 (Tischner et al. 2010)
Fjällbacka Experimental project (Portier et al. 2007) 1984 (Jupe et al. 1992) Sweden (Portier et al. 2007) Granite (Portier et al. 2007) 16 (Wallroth et al. 1999) 70 to 500 (Jupe et al. 1992) Hydraulic fracturing and acidizing (Portier et al. 2007) Microseismic (Wallroth et al. 1999) Unknown 1995 (Wallroth et al. 1999) 0.9 to 1.8 (Wallroth et al. 1999)
Rosemanowes Experimental project (MIT 2006f) 1977 (MIT 2006f) UK (MIT 2006f) Granite (MIT 2006f) 79 to 100 (MIT 2006f) 2,000 to 2,600 (MIT 2006f) Hydraulic fracturing (MIT 2006f), viscous gel stimulation (Parker 1999), placement of proppants in joints (Parker 1999) Max. magnitude, 3.1 (Bromley and Mongillo 2008) 54.2 to 80 (Richards et al. 1992) 1992 (MIT 2006f) 4 to 25 (MIT 2006f)
Fenton Hill First EGS in the world (MIT 2006g) 1974 (MIT 2006g) USA (MIT 2006g) Crystalline rock (Brown 2009) 200 to 327 (MIT 2006g) 2,932 to 4,390 (MIT 2006g) Hydraulic fracturing (MIT 2006g) Microseismic (Brown 1995) 180 to 192 (MIT 2006g) 1993 (MIT 2006g) 10.6 to 18.5 (MIT 2006g)
Ogachi Test run EGS project in shallow depth (Kaieda et al. 2005) 1989 (Kaieda et al. 2005) Japan (Kaieda et al. 2005) Granodiorite (Kaieda et al. 2010) 60 to 228 (Kaieda et al. 2005) 400 to 1100 (Kaieda et al. 2005) Multiple wells with multiple fracture zones (Kaieda et al. 2005); hydraulic (Kaieda et al. 2005) Few microseismic (Kaieda et al. 2010) 160 (test result) (Kaieda et al. 2005) 2002 (Kaieda et al. 2005) 6.7 to 20 (Kaieda et al. 2005) (test)