Geothermal exploration in the Fell Sandstone Formation (Mississippian) beneath the city centre of Newcastle upon Tyne, UK: the Newcastle Science Central Deep Geothermal Borehole
Geothermal exploration in the Fell Sandstone Formation (Mississippian) beneath the city centre of Newcastle upon Tyne, UK: the Newcastle Science Central Deep Geothermal Borehole
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英国泰恩河畔纽卡斯尔市中心下方的费尔砂岩地层(密西西比)地热勘探:纽卡斯尔科学中心深地热钻孔
DOI:
10.1144/qjegh2016-053
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发表时间:
2016
影响因子:
1.4
通讯作者:
Younger P
中科院分区:
文献类型:
--
作者:
Younger P
The postulate that geothermal energy might be recoverable from strata laterally equivalent to the Fell Sandstone Formation (Carboniferous: Mississippian) beneath Newcastle upon Tyne has been examined by the drilling and testing of the 1821 m deep Newcastle Science Central Deep Geothermal Borehole. This proved 376.5 m of Fell Sandstone Formation below 1400 m, much of which resembled braided river deposits found at outcrop, although some lower portions were reddened and yielded grains of aeolian affinity. Downhole logging after attainment of thermal equilibrium proved a temperature of 73°C at 1740 m, and allowed estimation of heat flow at about 88 mW m−2. This relatively high value probably reflects deep convective transfer of heat over a distance of >8 km from the North Pennine Batholith, along the Ninety Fathom Fault. The Fell Sandstone traversed by the borehole proved to be of low hydraulic conductivity (c. 7 × 10−5m d−1). The water that entered the well was highly saline, with a Na–(Ca)–Cl signature similar to other warm waters encountered in the region. It remains for future directional drilling to establish whether sufficient natural fracture permeability can be encountered, or wells stimulated, to support commercial heat production.
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DOI:
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发表时间:
1997
期刊:
Geological Society Special Publication
影响因子:
--
作者:
J. Ward
通讯作者:
J. Ward
DOI:
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发表时间:
2010
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影响因子:
2.3
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2011
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作者:
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通讯作者:
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DOI:
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发表时间:
1995
期刊:
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作者:
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通讯作者:
K. Rollin