土耳其东南部地区地热系统的地质和水文地球化学特性,Geothermics

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土耳其东南部地区地热系统的地质和水文地球化学特性
Geothermics ( IF 3.9 ) Pub Date : 2019-03-01 , DOI: 10.1016/j.geothermics.2018.12.010
A. Baba , F. Şaroğlu , I. Akkuş , N. Özel , M.İ. Yeşilnacar , M.T. Nalbantçılar , M.M. Demir , G. Gökçen , Ş. Arslan , N. Dursun , T. Uzelli , H. Yazdani

摘要安纳托利亚地区是世界上地震最活跃的地区之一。由于其地质和构造环境，它具有相当高的地热能潜力。东南安纳托利亚地区 (GAP) 位于阿拉伯前陆的比特利斯-扎格罗斯缝合带 (BZSZ) 南部。新构造时期，在GAP地区上中新世构造挤压作用下发育褶皱构造，与活动构造关系密切。这些构造活动产生了更多的地热资源。在该地区开展的地热能研究很少。在 GAP 地区，地热资源的有限部分已用于热旅游和温室。本研究的目的是确定地质、GAP 地区地热系统的构造和水文地球化学特性。结果表明，地热流体地表温度为20～84.5℃，区内发现大量废弃油井，温度高达140℃。此外，水文地球化学结果表明，由于冷水混合和水岩相互作用，深部循环地热流体富含 Na-Cl，浅层地热系统流体具有 Na-HCO3 和 Ca-SO4 特征。冷水一般为 Ca-Mg-HCO3 和 Ca-HCO3 类型。阳离子地温计用于确定该地区地热资源的储层温度。结果表明，这些地热资源的储层温度范围为50℃～200℃。同位素数据（氧 18，

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Geological and hydrogeochemical properties of geothermal systems in the southeastern region of Turkey

Abstract The Anatolia region is one of the most seismically active regions in the world. It has a considerably high level of geothermal energy potential thanks to its geological and tectonic settings. The Southeastern Anatolia Region (GAP) is located in the south of Bitlis-Zagros Suture Zone (BZSZ) which is in the Arabian foreland. During the neotectonic period, the folded structures have been developed under the influence of tectonic compression from the Upper Miocene in the GAP Region where it is closely related to active tectonics. These tectonic activities produce more geothermal resources. Few studies have been carried out in this region for geothermal energy. Limited portions of the geothermal resources have been used both for thermal tourism and greenhouses in the GAP region. The aim of this study is to determine geological, tectonic and hydrogeochemical properties of a geothermal system in the GAP Region. The result indicates that the surface temperatures of geothermal fluids are from 20 to 84.5 °C A large number of abandoned oil wells, whose temperature reaches 140 °C, are found in the region. Also, hydrogeochemical results show that deep circulated geothermal fluids are enriched with Na-Cl and shallow geothermal system fluids have Na−HCO3 and Ca-SO4 characters because of cold water mixing and water-rock interaction. Cold waters are generally of Ca-Mg−HCO3 and Ca−HCO3 type. Cation geothermometers were used for determining reservoir temperature of the geothermal resources in the region. The results show that the reservoir temperature of these geothermal resources ranges from 50 °C to 200 °C. The isotope data (oxygen-18, deuterium and tritium) suggests that geothermal fluid is formed by local recharge and deep circulation.

更新日期：2019-03-01

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