Integrated Geophysical Exploration Methods At European Sites- Results From The I-Get Project
Conference Paper: Integrated Geophysical Exploration Methods At European Sites- Results From The I-Get Project
The detection of fluid-bearing fractures suitable for an economic exploitation of a potential reservoir in conventional geothermal as well as in blind systems prior to drilling is the most important task in geothermal exploration. The way this task was tackled within the European I-GET project was by integrating several different geophysical methods into one final reservoir model. For this project data were actively acquired in field experiments at four European geothermal systems with different geological and thermodynamic reservoir characteristics: two high enthalpy (metamorphic and volcanic rocks), and two low enthalpy geothermal system in sedimentary rocks. The emphasis was on electromagnetic methods, mainly MT, and on either passive or active surveys at the different field sites. Existing well logs were used where available to constrain the interpretations derived from the field data. In addition, petrophysical properties of the investigated rocks have been defined by laboratory measurements. With respect to the high enthalpy sites elastic and electric rock properties have been determined at the steam/liquid transition of the pore fillings.The results of the project showed that a joint interpretation of different methods in one reservoir model reveals potentially interesting geothermal targets more reliably than the individual methods applied and interpreted separately. The integrated models (e.g., Ollinger et al., 2009) give a much improved image of the subsurface to be developed for geothermal use. A special volume of results is in preparation in Geothermics, where project results are presented in 13 contributions. This volume will be in press most likely late 2009/early 2010 (Volume 38, No.4).
- David Bruhn and I-GET Consortium
- GRC, 2009
- Not Provided
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David Bruhn,I-GET Consortium. 2009. Integrated Geophysical Exploration Methods At European Sites- Results From The I-Get Project. In: (!) ; (!) ; (!) . (!) : GRC; p. (!)