To determine factors controlling permeability variations within and adjacent to a fault-hosted geothermal reservoir at Dixie Valley, Nevada, we conducted borehole televiewer observations of wellbore failure (breakouts and cooling cracks) together with hydraulic fracturing stress measurements in six wells drilled into the Stillwater fault zone at depths of 2-3 km. Measurements in highly permeabl...

Dagestan is one of the pioneers in matter of analysis and industrial development of geothermal resources in Russia. Despite lacking obvious volcanism, mountain-filled Dagestan is rather rich in thermomineral sources and geothermal anomalies (Ahti, Hnov, Richalsy, Giljar, Berikey, Duzlak, Alchadjikent, Kayjakent, Adgi, Istisy, Miatli, Hzanor etc.). In premountain-flat Dagestan by drilling in gas...

A geothermal power plant multiple simulator for operators training is presented. The simulator is designed to be installed in a wireless local area network and has a capacity to train one to six operators simultaneously, each one with an independent simulation session. The sessions must be supervised only by one instructor. The main parts of this multiple simulator are: instructor and operator’...

This paper presents a computational procedure designed to derive a regional model of the low temperature geothermal potential and its economic exploitability. The model was applied to the Italian Marche region and developed with the support of a Geographic Information System (GIS), which highlights the spatial dependencies in the distribution of geothermic resources. The Low Temperature Geother...

1. Abstract Two modelling challenges were encountered while building a data-driven predictive map of geothermal potential for the Great Basin in the western United States. The first was that many of the input evidence layers that represent young faults or active tectonics were not conditionally independent with regards to geothermal training sites. The second was that a significant portion of t...

Following a period of exploration and development in the mid-late 1970’s, there was little activity at the Raft River geothermal field for the next ~20 years. US Geothermal Inc. acquired the project in 2002, and began commercial power generation in January 2008. From mid-2004 to present, US Geothermal Inc. has collected geochemical data from geothermal and monitoring wells in the field, as well...

In t roduc t ion The F i r s t Stanford Geothermal Reservoir Engineering Workshop was convened i n December, 1975. Its success i n compiling t h e s c a t t e r e d information on geothermal rese r v o i r engineering r e s u l t e d i n i t s es tab l i shment as an annual event of t h e Stanford Geothermal Program. it is appropr ia te t o look back over t h e eff o r t s of t h e p a s t six ...

Objective. To investigate the influence of high-salinity geothermal mineral water on stress and fatigue. Method. 180 seamen were randomized into three groups: geothermal (65), music (50), and control (65). The geothermal group was administered 108 g/L salinity geothermal water bath for 2 weeks five times a week. Primary outcome was effect on stress and fatigue. Secondary outcomes were the effec...

The existing volumetric approach was honored by considering the effects of oil and gas saturations on the evaluation of geothermal resources in oil and gas reservoirs. The main reason to do so was that oil and gas phases may not be simply substituted by water because the values of the specific heat of oil and gas are smaller than that of water. We selected an oil reservoir, Hexiwu, from Huabei ...

Direct use geothermal heating relies on heat extracted from naturally occurring geothermal water sources to provide heating needs for commercial and residential use. The city of Boise, Idaho maintains the largest district geothermal heating system in the United States, utilizing a source of geothermal water at 80°C. 304 Stainless steel (UNS S30400) pipe clamps are used throughout the system as ...