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II. IEA GEOTHERMAL R&T PROGRAMME ANNEX III It was decided to attempt the assembly of a tool to give an overview of what has been achieved and how, without including all the technical details. Compiling an easy to understand management decisional tool for new EGS project teams, with no compromises in accuracy and clarity is a huge task. Nevertheless, it is an integrated part of every development process in the field of enhanced technologies. Thus the development of a tool in the form of a collection of relevant information has been planned. Its aim is to provide an information framework for the project planning and construction of first generation commercial EGS plants. The tool, that is to say the resulting information collection, will be assembled to create what we have named a Project Management Decision Assistant (PMDA). The concept includes documenting the availability of special tools and services and assembling an overview of data, data analyses and experiences (in the way of lists of reports and publications with their abstracts) gained at the major EGS projects worldwide since the early 1970’s. Four fields of activity have been planned: • Because of the long gestation time of the EGS technology, it was believed useful to document the experiences of the various R & D projects, both past and present, in the field. • Create a list of literature references with abstracts wherever possible. • Produce an index of potential suppliers, service operators and consultants with relevant experience. • An overview of data requirements during planning and construction of a commercial EGS plant would be given using the idea of a Generic Project as a vehicle for presentation. This is based on a project plan. However its presentation does not show activities as such, but only the data requirements for completing project milestones. 3.2.3 Subtask D- Reservoir Evaluation (Subtask Leader: Tsutomu Yamaguchi, AIST, Japan) The overall objective of Subtask D is to compile and make clear what kinds of methods, techniques, and tools are effective for reservoir evaluation; and then establish the evaluation method that can be applied to develop a new EGS site. An Internet questionnaire was developed and used in 2002 to obtain this information. Unfortunately, the answers, especially from countries other than Japan, were not sufficient to complete this task. Thus, in Subtask D, efforts will be focused on compiling Japanese data from the Hijiori and Ogachi fields. 3.2.4 Subtask E- Field Studies of EGS Reservoir Performance (Subtask Leaders: Roy Baria, EEIG, EC; and Peter Rose, EGI, University of Utah, USA) This is a new Subtask, accepted into Annex III in October 2004. The objective of Subtask E is to conduct field studies of EGS reservoir development and performance with the intent of understanding reservoir behaviour and the sustainability of energy recovery. This topic covers a broad area and includes subjects such as hydraulic stimulation, fracture mapping, tracer analysis, geophysical methods and geochemistry. Participants in this subtask will conduct cooperative work at one or more EGS site undergoing development and suitable for field studies. Staff exchanges will occur in support IEA Geothermal R&T Annual Report 2004.doc 24PDF Image | Geothermal Energy Annual Report 2004
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