@article{8492c7b07c4f49cdbebbca07c44c0ab7,
title = "Current status of seismic and borehole measurements for HDR/HWR development",
abstract = "Seismic and borehole measurements provide significant information about HDR/HWR reservoirs that is useful for reservoir development, reservoir characterization, and performance evaluation. Both techniques have been widely used during all HDR/HWR development projects. Seismic measurements have advanced from making passive surface measurements during hydraulic fracturing to making passive observations from multiple boreholes during all phases of HDR/HWR development, as well as active seismic measurements to probe regions of the reservoir deemed to be of interest. Seismic data provide information about reservoir extent, locations and orientations of significant fractures, and areas of thermal drawdown. Recent advances include the ability to examine structures within the seismically active zone using statistics-based techniques and methods such as seismic tomography. Seismic method is the only means to obtain direct information about reservoir characteristics away from boreholes. Borehole measurements provide high-resolution information about reservoir characteristics in the vicinity of the borehole. The ability to make borehole measurements has grown during the course of HDR/HWR development as high temperature tools have been developed. Temperature logging, televiewer logs, and electrical property measurements have been made and shown to provide useful information about locations of fractures intersecting wellbores, and regions where water leaves and enters injection and production wellbores, respectively.",
keywords = "HDR/HWR, Hot dry rock, Induced seismicity, Logging, Microearthquakes, Seismology",
author = "Hiroaki Niitsuma and Michael Fehler and Robert Jones and Stephen Wilson and James Albright and Andrew Green and Roy Baria and Kazuo Hayashi and Hideshi Kaieda and Kazuhiko Tezuka and Andy Jupe and Thomas Wallroth and Fran{\c c}ois Cornet and Hiroshi Asanuma and Hirokazu Moriya and Koji Nagano and Phillips, {W. Scott} and James Rutledge and Leigh House and Alain Beauce and Doug Alde and Richard Aster",
note = "Funding Information: As a result of the large number of projects in different geological settings, there is now considerable breadth of experience in applying seismic techniques to the development of HDR/HWR systems. In an attempt to share the experience gained by various groups, an international collaborative effort named the MTC (More Than Cloud) Project was initiated in 1993 between HDR/HWR research groups in the USA, the European Community and Japan. The objectives of this project are to share the experience and ideas gained from investigations in different systems and to establish new mapping/imaging techniques that will provide detailed information on geothermal reservoirs. This project includes cooperative research, exchange and utilization of the field data sets obtained by each research group, joint field data acquisition efforts, researcher exchange, and annual meetings. By 1997 the project included ten research groups and five observers from the USA, UK, France, Japan, Sweden, Germany, Switzerland, and Australia. The project received direct funding from NEDO (New Energy and Industrial Development Organization of Japan) for FY95–97 and from MESSC (Ministry of Education, Science, Sports and Culture, Japan) for FY96–97. ",
year = "1999",
month = aug,
doi = "10.1016/S0375-6505(99)00024-3",
language = "English",
volume = "28",
pages = "475--490",
journal = "Geothermics",
issn = "0375-6505",
publisher = "Elsevier Limited",
number = "4-5",
}
