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FEASABILITY STUDIES & OPTIONS APPRAISALS

Many of our clients are at an early stage in their project planning and do not yet know whether there is a viable geothermal option to meet their heat or power needs. We offer a staged feasibility and development approach which aims to minimise financial exposure as the risks and uncertainties are reduced by further and more detailed work.

An initial feasibility study typically includes:

  • An assessment of the heat load for the end use.

  • A review of the available geological information, borehole information and any seismic interpretations to determine the likely geological prognosis beneath the target site, with specific reference to the potential presence of a suitable reservoir layer (aquifer), or target structure.

  • A review of the available geothermal data to estimate the likely temperature of the rocks at the depth of the reservoir layer or target structure. This will include any published information on the geology, heat flow and temperature distributions.

  • A technology options appraisal, outlining the potential geothermal solutions available to meet the heat load.

 

If these findings are positive, the next step in establishing feasibility is to carry out an  exploration programme to confirm the geological conditions, measure the subsurface temperature profile and rock permeability, and establish which technology, or combination of technologies, will be the most appropriate and cost effective,

 

  • An exploration programme may include:

  • Geology field work

  • Surface geophysics

  • Drilling of one or more small diameter exploration boreholes

  • Downhole measurements, flow testing and fluid sampling

 

Successful completion of the exploration programme allows the development of a full project design and programme, including projections of performance and energy outputs, drilling costs, surface plant construction and O&M costs.

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