Objective
To use geothermal energy on an atlantic island for fish farming during winter.
The water of 25 deg.C used for the prefattening of young fish is obtained by mixing sea water preheated by previously used water via a heat exchanger and geothermal water.
The main target, a reservoir with a temperature of 38 deg.C lying at a depth of 450 m and a made up of dogger limestone, will be exploited open hole. If the required production flowrate (120 m3/h) is not achieved, the well will be deepened to underlying formations (liassic limestones). Due to a vary low salinity, geothermal water can be used directly.
According to the project design a primary energy saving of 1740 TOE/year is expected with a corresponding payback of 3,5 years.
The reservoir has proved no sufficient permeability. The well is abandoned and cemented.
Drilling platform had been set up on January 1987. Drilling operations started on February 1987 and the well drilled down to 507 m into dogger formation. The casing 9"5/8-7" is cemented to 450 m and reservoir equipped with screens and gravel pack. Production flowrate after 4 acidifications is 3 m3/h with 10 Bars drawdown. Mud losses during the drilling phase from 20 to 100 m indicate an important reservoir but the temperature of water appears to be very low (14 to 16 deg. C).
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Programme(s)
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Topic(s)
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
17550 ST CLEMENT DES BALEINES
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.