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Twelve precision gravity surveys have been carried out at the Bulalo Field since production began in 1979. Eight precision leveling surveys have been carried out over this same period to monitor elevation changes at the same benchmarks (BMs). The Bulalo F

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Based on a continuum description, the effects of permeability heterogeneity on steady state, countercurrent, vapor-liquid flow in porous media are analyzed. It is shown that the capillary heterogeneity induced acts as a body force, that enhances or dimini

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08/01/2015 - 08:41

From the last country update report, which was presented during the 2000 Kyushu-Tohaku congress, the geothermal development and exploitation have fully continued at Miravalles the only costarican productive geothermal field. At the end of this period the

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08/01/2015 - 08:41

A Publication of the California Division of Oil and Gas, published in 1982. Publication includes a fluid-flow model of The Geysers Geothermal Field, Hawaiian geothermal development, geothermal energy in Iceland, Stanford geothermal seminars, National Cartographic Information Center in Sacramento, and division well production and injection statistics.Geothermal Hotline publication No. TR02, Vol. 12 No. 1. This resource is available online as a downloadable file. For more information see links provided.

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Clipped geotiff image of the scanned Franklin map. Does not include collar information

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08/01/2015 - 08:41

Results of recent flow testing at Fenton Hill, New Mexico, have been examined in light of their applicability to the development of commercial-scale hot dry rock (HDR) reservoirs at other sites. These test results, obtained during the cumulative 11 months

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08/01/2015 - 08:41

In Kenya, several Acts of Parliament regulate and guide use of geothermal and other natural resources in a sustainable way. The laws that deal specifically with geothermal development are Environmental Management and Co-ordination Act of 1999 (EMCA 1999)

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08/01/2015 - 08:41

The Tiwi geothermal resource was initially liquid-dominated but pressure drawdown in the early years of production resulted in the formation or expansion of a shallow steam zone in Naglagbong and later in the Matalibong, Kapipihan and Bariis sectors to th

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A 1:30,170 scale map of the geology of the Deep River coal field

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This resource is a metadata compilation for geothermal related resource records in data exchange content models submitted by Washington as their deliverables under the AASG NGDS project (2010-2014) for inclusion in the NGDS Catalog. The content model defines the information that will be associated with a feature or observation type; the content model may be implemented in a variety of ways, but USGIN is currently implementing these interchange formats as GML Simple Features to be served by an OGC WFS. Data is available in an Excel workbook, ESRI Map Server, Web Map Service, and Web Feature Service with appropriate ResourceURLs listed for each record.

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08/01/2015 - 08:41

Maps of Great Basin groundwater geochemistry show distinctive regional spatial patterns. Factors affecting the concentrations of dissolved constituents include bedrock lithology, location within structural zones, geothermal systems, and surficial playa deposits and salt lakes. In this study, a large geochemical database of ~24,750 Great Basin groundwater samples from springs and wells was compiled from multiple sources. These data were uploaded into a geographic information system (GIS) and used to produce concentration maps for As, B, Ba, Ca, Cl, F, Fe, HCO3, K, Li, Mg, Mn, Na, SiO2, and SO4. These maps were then examined to identify geologic factors that might have influenced their concentration, including the presence of geothermal systems. A weights-of-evidence statistical analysis was then performed to assess the correlation between the concentration maps and a set of ?150o C geothermal systems. The results indicate that all 14 constituents correlate to some degree with geothermal systems. Fluorine, boron, arsenic, and silica have the highest spatial correlation. In addition, a subset of the data representing samples with measured temperatures 20oC was also analyzed; overall correlations were lower, but manganese, arsenic, and silica are still useful indicators. Samples from both the full and the 20oC datasets were grouped into statistically significant populations. Breakpoints for these groups can be used as a measure of likelihood of a sample having been influenced by geothermal activity. The study shows that (1) regional groundwater geochemical patterns exist in the Great Basin, (2) these patterns can serve as effective geothermal exploration tools, and (3) a set of concentrations derived from the weights-of-evidence analysis may serve as favorability indices indicative of the influence of geothermal activity on hot and cold groundwater samples.

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08/01/2015 - 08:41

This resource is a compilation of Massachusetts Well Header feature data for select water wells in Massachusetts, provided by the Massachusetts Geological Survey. The data are available in the following formats: web feature service, web map service, ESRI service endpoint, and an Excel workbook for download. The workbook contains nine worksheets, including information about the template, notes related to revisions of the template, resource provider information, the data, a field list (data mapping view) and vocabularies (data valid terms) used to populate the data worksheet. This resource was provided by the Massachusetts Geological Survey and made available for distribution through the National Geothermal Data System.

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This resource is available as a downloadable file, ESRI Service, and as a Web Feature service. Resource includes six plates with downloadable images: Plate I: Surficial Material, Plate II: Bedrock, Plate III: Ground Water Potential, Plate IV: Solid Waste Disposal Conditions, Plate V: Septic Tank Conditions, and Plate VI: General Construction Conditions. Resource also includes text on Environmental planning for the Johnson-Hardwick Region, Vermont. For more information see links provided.

This is the fourth report in a series of environmental studies sponsored by the Vermont Geological Survey. The first three of these studies were completed by Dr. David P. Stewart in the Barre-Montpelier (1971), Rutland-Branclon (1972), and Burlington-Middlebury (1973) regions. The field work for the Present report was completed during the summer of 1973 by the writer, assisted by John S. Moore, graduate student in the Department of Geology, University of Vermont. This report, intended for publication in 1974, attempts to relate in a condensed and simplified form the geological conditions of the Johnson-Hardwick Region as they relate to existing environmental problems and to make this material available to planners and other interested parties (Figure 1). Much information, relating to the various categories treated, is included in a series of large-scale planning maps and seismic profiles.

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08/01/2015 - 05:41

The main application aspects of thermal heat carriers are as follows: production of electricity, heat and cold supply. In the current report we consider two aspects: efficiency of cogeneration of electric and heat energy by the binary low-temperature setu

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