During the past 50 years the Bureau de Recherche Géologiques et Minières, (BRGM) has collected a large amount of diverse data during projects for water and h ydrocarbons exploration and underground storage investigations (methane, nuclear-waste, etc.). Societal and environmental issues have had a significant influence on research applied to groundwater exploration and characterization. During t...

Two deep geothermal wells, one of which is the deepest onshore UK well, have been successfully drilled to intersect Porthtowan Fault zone in early Permian high heat flow Carnmenellis Granite, part major post-Variscan Cornubian batholith underlies SW England. The drilling target was prognosed at 4 5 km depth from existing surface data and limited geophysics. It a late Variscan complex strike-sli...

• Oil, gas, and geothermal exploration benefit from drill bit monitoring • Bits are expensive and may be damaged by high temperature or pressure • Bit orientation can be monitored to help guide bore hole • State of the art: mud modulation • Mud used to cool and lubricate drill bit • Collar near bit chokes flow to relay signal • Pressure sensor at surface decodes • Effective but slow, unidirecti...

Geothermal energy is an important resource in the fight against climate change, but local siting issues often stand way. We analyze socioeconomic determinants of location all geothermal drilling explorations Japan from 1975 to 2014. Statistical analysis based on original dataset shows that (1) municipalities with more hot springs inns than other are less likely have a exploration, and (2) becom...

Panax Geothermal Limited is developing a geothermal resource in South Australia, the Limestone Coast Project, which is a conventional “hot aquifer” reservoir in a deep sedimentary basin. The initial development is the Pretty Hill Formation sandstones in the Penola Trough of the Otway Basin. The area is an exploited gas basin with modern 3D seismic and excellent existing petroleum well data cove...

Mita is a moderate temperature geothermal system that was discovered in 1997 during gold exploration in south-eastern Guatemala. This system is associated with bimodal basaltrhyolite volcanism, and occurs alongside (and overlapping with) the Cerro Blanco 2 million ounce epithermal gold deposit. Four 1000-1500m deep slim holes were drilled in 2008-09 to confirm the nature of the deep reservoir. ...

Geothermal power projects in Turkey are outliers for this technology because of their very high CO2 emissions rates (800-1600 g/kWhr) which are comparable to or significantly exceed those from coal-fired power generation (940-980 g/kW-hr). A “typical” 50 MW geothermal project in Turkey producing 1000 g/kW-hr CO2 emits 1,200 tonnes per day of CO2 to the atmosphere. CO2 is discharged to the atmos...