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首页> 外文会议>Workshop on Geothermal Reservoir Engineering >THE IN-SITU GEOTHERMAL LABORATORY GROBSCHOEBECK - LEARNING TO USE LOWPERMEABILITY AQUIFERS FOR GEOTHERMAL POWER
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THE IN-SITU GEOTHERMAL LABORATORY GROBSCHOEBECK - LEARNING TO USE LOWPERMEABILITY AQUIFERS FOR GEOTHERMAL POWER

机译：原位地热实验室Grobschoebeck - 学习使用较低的含水层进行地热力

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An in-situ downhole laboratory was established with the purpose of developing appropriate stimulation methods to increase permeability of deep aquifers by enhancing or creating secondary porosity and flow path. Effective stimulation is needed to use low permeability aquifers for generating electricity from geothermal energy. The laboratory was installed in the former gas exploration well GroBSchonebeck about 50 km northeast of Berlin. Before Christmas of 2000 this well was re-opened and deepened another 60 m to 4294 m. The openhole section of this well cuts through 400 m of the Rotliegend formation, comprising siltstones, sandstones, conglomerates and andesites. The maximum temperature measured was 149 deg C. A first production test showed that most of the flow at present occurs in a section of volcanic rock and not in the overlying sandstones as was initially expected. Formation fluids were sampled and contain more than 250 g/l of total dissolved solids. Presently stimulation experiments are being carried out in the sandstone section. In these experiments the bottom part is isolated from the test interval by sanding up and a mechanical packer-system at the top.
机译：建立了原位井下实验室，目的是通过增强或产生次要孔隙率和流动路径来提高适当的刺激方法以提高深含水层的渗透性。需要有效的刺激来利用低渗透含水层来从地热能发电。该实验室安装在前天然气勘探中，Grobschonebeck大约在柏林东北50公里。在2000年圣诞节之前，这井被重新开放并加深了60米至4294米。这种孔的透光部分通过400米的罗利醌形成，包含硅灰石，砂岩，集团和岩石。测量的最大温度为149℃。第一生产测试表明，目前的大多数流动发生在火山岩的一部分中，而不是最初预期的覆盖砂岩。取样形成液并含有超过250g / L的总溶解固体。目前刺激实验是在砂岩部分进行。在这些实验中，底部通过在顶部打磨和机械包装器系统从测试间隔隔离。

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