Science – Society – Technology
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) |