Geothermal resources of the United Kingdom
Geothermal resources of the United Kingdom
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英国的地热资源
DOI：
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发表时间：
1986
影响因子：
2.7
通讯作者：
D. Gray
中科院分区：
文献类型：
--
作者：
R. A. Downing;D. Gray
英国的地热前景以深层沉积盆地中的低焓资源和放射性花岗岩中的“干热岩”（HDR）资源为代表，并可能在被厚的低电导率沉积物覆盖的深层基底岩石中。低焓资源存在于温度超过40°C的二叠纪-三叠纪砂岩中。已经钻了四口深勘探威尔斯井，以调查这些沉积含水层的潜力。主要的人类发展报告资源潜力与英格兰西南部和北方的主要花岗岩岩基有关，在那里，温度预计分别为200°C，约5.4公里和6公里。坎伯恩矿业学院正在康沃尔的试验场研究人类发展报告的潜力，在那里已经钻了三个钻孔，深度在2到2.5公里之间。在温度超过100°C和深度小于7公里的干热岩可吸收资源基地为36 × 1021焦耳（相当于1.3亿吨煤）。二叠-三叠系砂岩在40 ℃以上温度下的低焓地热资源量为200 × 1018焦耳（相当于约80亿吨煤）。如果这些资源中只有一小部分可以开发，那么就英国的能源平衡而言，这将是非常重要的。
Geothermal prospects in the UK are represented by low enthalpy resources in deep sedimentary basins and 'Hot Dry Rock' (HDR) resources in radiothermal granites, and possibly in deep basement rocks where they are overlain by thick low conductivity sediments. The low enthalpy resources are in Permo-Triassic sandstones at temperatures of more than 40°C. Four deep exploration wells have been drilled to investigate the potential of these sedimentary aquifers. The main HDR resource potential is associated with major granite batholiths in southwest and northern England where temperatures are predicted to be 200°C at about 5.4 and 6 km respectively. The HDR potential is being investigated by the Camborne School of Mines at their test site in Cornwall where three boreholes have been drilled to depths of between 2 and 2.5 km. The Hot Dry Rock Accessible Resource Base at temperatures of more than 100°C and depths of less than 7 km is 36 X 1021 joules (equivalent to 130 × 104 million tons of coal). The low enthalpy Geothermal Resource of the Permo-Triassic sandstones at temperatures of more than 40°C is 200 × 10l8 joules (equivalent to about 8000 million tons of coal). If only a small fraction of these resources could be developed, it would be significant in terms of the UK’s energy balance.