A dataset comprised of 3946 well-located and wellconstrained earthquake focal plane mechanisms recorded in the Northwest Geysers geothermal field during the period of Jan 2005 – May 2012 was used to determine stress orientations and relative magnitudes at fine scale. The stress inversions were organized into gridblocks of varying size using a three-dimensional oct-tree gridding algorithm in whi...

The main reservoir in the Dixie Valley geothermal field of Nevada is hosted in fractured Jurassic rocks within the hanging wall of the Stillwater fault. Within the Jurassic sequence, at least four major stages of alteration related to the fault system can be identified. The paragenetic sequence from oldest to youngest consists of Stage I) biotite-potassium feldspar veins, and epidote-chlorite-c...

The geological structure is rather complicated in Guangdong province, China. 10 deep fault belts are mainly oriented NE. NE good channels for thermal energy upwelling, which can form a geothermal water reservoir zone. heating of atmospheric precipitation and surface by rocks the primary formation mechanism hydrothermal resources Huangshadong field. results show that two-stage conversion system ...

Two-phase flow (flow of water in both liquid and gas phase, containing a non-condensable such as CO 2 ) the wellbore is one most important processes production performance scaling evaluations high temperature geothermal wells. This paper first describes discharge tests Yangbajing field, Tibet. Next, simple model for governing two-phase presence constructed robust calculation method presented. T...

Abstract Combined with geothermal drilling, well logging, geological and geophysical investigations, this study established a conceptual model of the Dumeng field, Songliao Basin, evaluated potential resources western Taikang town, an area under concentrated development in based on transient groundwater flow equation. The results show that field is part conductive type system. heat reserve 8.76...

Europe is the world leader in geothermal direct use. Geothermal is used in 32 European countries mainly for space heating, bathing and balneotherapy, than for heating greenhouses, aquaculture, and industrial use. In a number of countries the development is based on waters exploited from deep wells. Some countries have been dynamically developing shallow geothermal based on heat pumps. Power gen...

Geological faults are highly developed in the eastern Liaoning Province in China, where Mesozoic granitic intrusions and Archean and Paleoproterozoic metamorphic rocks are widely distributed. Although the heat flow value in eastern Liaoning Province is generally low, the hot springs are very developed. It is obvious that the faults have significant control over the distribution of hot springs, ...

DOI:10.17014/ijog.9.1.119-130 Research on surface geothermal evidence has been done extensively using remote sensing techniques. For detailed exploration areas, UAV and airborne based were preferred over the satellite-based sensor. In this research, anomalies in temperature, mineral occurrence, ammonia emission studied a set of hyperspectral imagery from NASA, Hyperspectral Thermal Emission Spe...

The Energy Policy Act of 1992 embraces and implements many of the actions recommended by the President in the National Energy Strategy. .Independent geothermal power producers may be direct beneficiaries of 1) further deregulation of IPPs through their exemption from the provisions of the Public Utility Holding Company Act and 2) potentially freer access to utility-owned transmission facilities...