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Search upper slochteren member: Geothermal energy
...SPE 121985 Opportunities for Geothermal Energy in Franekeradeel, Netherlands L.J.Heijnen, SPE, N.A. Buik and A. Willemsen, SPE, IF and T. Bakker,...us acknowledgment of SPE copyright. Abstract The potential for the exploration and exploitation of geothermal energy for greenhouses in Franekeradeel in the north of the Netherlands has been investigated. Available b...ed that the Slochteren Formation is around 200 m thick at the proposed location. Based on the local geothermal gradient, the temperature at the top is estimated to be around 100 ºC. At the surface location a fa...
...distribution of well DJM-01. The results of the seismic mapping are shown in figure 5. Applying the geothermal gradient to the depth of the Slochteren Formation results in a temperature in excess of 100 ºC. 58...on of the flowrate a minimum transmissivity of 11 Dm for the whole Slochteren Formation is assumed. Geothermal installation For the design of the ...geothermal installation, an estimation of the potential flowrate is needed. The flowrate can be estimated by a...
...SPE 121985 5 extracted and the electrical energy consumed by pumps. A relation between the COP and the flowrate can be used to determine either of t...ue. Yearly investments and operating expenditure are included. For the yearly income, the amount of geothermal heat is multiplied with a variable price for the heat. To determine the price for the heat, two bou...ndary conditions must be met: 1) The internal rate of return is 6 % 2) The Net Present Value of the geothermal installation after 30 years is zero. Furthermore a price inflation and indexation of 2% are applied...
Abstract The potential for the exploration and exploitation of geothermal energy for greenhouses in Franekeradeel in the north of the Netherlands has been investigated. Available borehole and seismic data have been used for the evaluation of the subsurface. These data show that the Slochteren Formation sandstone reservoirs are very likely present at a depth of ca 3,000 m. These reservoirs are deemed to be suitable for the production of hot water. From interpreted 2D seismic lines could be inferred that the Slochteren Formation is around 200 m thick at the proposed location. Based on the local geothermal gradient, the temperature at the top is estimated to be around 100 ºC. At the surface location a fault zone is present in the subsurface complicating the siting of the injection and production wells. Towards the northeast the proposed reservoir is seemingly less faulted. A minimum transmissivity of 11 Dm is expected, based on the measured porosity in nearby boreholes and porosity-permeability relationships in the surrounding area. A potential flow rate of 160 m3/h is hence inferred, leading to a thermal capacity of 11 MWt which can be delivered with one doublet. Different well configurations were studied. The conclusion is that deviated wells from the edge of the surface location towards the northeast carry the lowest risk at still acceptable costs. From financial analyses taking different options into account, it was concluded that geothermal energy can deliver significant amounts of renewable energy for heating of greenhouses. In the optimum situation, the cost price of heat amounts to 6,20 Euro/GJ delivering annual 202 TJ of energy. This price is below the current price (January 2008) of natural gas at 0,20 Euro/m. Introduction In Franekeradeel, the province Friesland in the northern Nertherlands, near the village of Sexbierum an expansion of greenhouses is foreseen for the nearby future. The ambition of the regional government is a reduction in the water- and energy-consumption compared to exisiting greenhouses. One of the options to reduce the amount of fossil fuels is to use geothermal energy for the heating of the greenhouses. Within this paper, the opportunities for geothermal energy are discribed. Geologically speaking, the area is located within the Northwest European basin and its history has been influenced by sedimentation rates, tectonic phases and sea level changes. The oldest penetrated sediments in the area are of Carboniferous age. The geology of the area consists of different types of sediments with unconformities and NW-SE oriented faults. An overview of the different formations, their depth, thickness and temperature are given in table 1. The reservoir temperatures have been estimated by uncorrected bottomhole temperatures, from which the geothermal gradient could be estimated. The number of log-runs in the wells was insufficient to correct bottomhole values to the real temperature of the reservoirs, leading to an underestimation of gradients.
- Europe > Norway > Norwegian Sea (0.26)
- Europe > Netherlands > Friesland (0.24)
- Phanerozoic > Mesozoic (0.70)
- Phanerozoic > Paleozoic > Carboniferous (0.34)
- Europe > Netherlands > Schoonebeek License > Lower Buntsandstein Formation (0.99)
- Europe > Netherlands > North Sea > Dutch Sector > Leeuwarden License > Ommelanden Formation (0.99)
- Europe > Netherlands > Gronigen Area > Upper Rotliegend Group (0.99)