| 冀中牛驼镇凸起地温场的特点及地下热水的开发利用 |
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| 引用本文： | 陈墨香,黄歌山,张文仁,张容燕,刘炳义.冀中牛驼镇凸起地温场的特点及地下热水的开发利用[J].地质科学,1982,0(3):239-252. |
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| 作者姓名： | 陈墨香 黄歌山 张文仁 张容燕 刘炳义 |
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| 作者单位： | 1. 中国科学院地质研究所;2. 华北石油水电指挥部 |
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| 摘 要： | 牛驼镇凸起是冀中拗陷中一个显著的次级正向构造,其地理位置见图1。1973—1978年进行石油普查和勘探时,在该区相继发现了地下热水,引起了人们的注意,先后对热水的分布有过报道和论述1,2]。鉴于牛驼镇凸起(包括容城凸起)地热异常在华北平原具有代表性,我们在石油部门的协助下,在本区较系统地开展了地温测量并收集有关资料进行研究。本文试图剖析这个典型地区地温场的特点,作为圈定和预测华北平原地热异常区以及分析地下热水分布规律的基础。
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| 关 键 词： | , |
| 收稿时间： | 1981-05-28 |
| 修稿时间： | 1981-05-28; |
THE TEMPERATURE DISTRIBUTION PATTERN AND THE UTILIZATION OF GEOTHERMAL WATER AT NIUTUOZHEN BASEMENT PROTRUSION OF CENTRAL HEBEI PROVINCE |
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| Chen Moxiang,Huang Geshan,Zhang Wenren,Zheng Rongyan,Liu Bingyi.THE TEMPERATURE DISTRIBUTION PATTERN AND THE UTILIZATION OF GEOTHERMAL WATER AT NIUTUOZHEN BASEMENT PROTRUSION OF CENTRAL HEBEI PROVINCE[J].Chinese Journal of Geology,1982,0(3):239-252. |
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| Authors: | Chen Moxiang Huang Geshan Zhang Wenren Zheng Rongyan Liu Bingyi |
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| Institution: | 1. Institute of Geology, Academia Sinica, Beijing;2. Headquarters of Water Conservancy and Electric Power, North China Oil Field, Renqiu |
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| Abstract: | In this paper a review of the temperature distribution pattern and the geother-mal water occurrences is given for the area studied on the basis of measurements of stable temperature in 24 deep drill holes,11 artesian wells,and analysis of temperature data on oil-bearing layers in 65 oil producing wells and prospecting wells.The temperature distribution pattern in this region is dominated by its marked tectonic framework-two subsidences with a basement,protrusion in between.The similarity of two subsidences and the difference between subsidences and protrusion can equally be noted in the light of mean thermal gradient,temperature and heat flow values in the sedimentary cover.The geothermal gradient in the major part of the Niutuozhen protrusion is 5-7℃/100 m or more;temperature at a depth of 1000 M is 60-80℃;terrestrial heat flow is 1.7-2.5 HFU.Meanwhile,in Langfoung-Guan subsidence,gradient is 2.1-3.0℃/100M,temperature at 1000 M is 35-40℃.Whereas in the Baxian subsidence the corresponding values are:G=2.5-3.3℃/100M,G=2.75℃/100M,T1000M=39-43℃.The estimated heat flow in both subsidences are all about 1.0 HFU.A comparison of the geothermal regime of basement subsidence with protrusion indicates that a marked geothermal anomaly occurs in the Niutuozhen protrusion. The Niutuozhen Geothermal Field can be described as a low-temperature thermal water occurrence with a two-layer structure.A geothermal reservoir of Sinian and lower Palaeozoic carbonates is overlain by a sediment cover of Tertiary clastic rocks.Thermal water from carbonates has valuable geothermal potential in this region.Its prominent features are:1) shallow depth of occurrence with elevated temperatures.Usually,a 800-1100M deep well in the anomaly area yields a productive water flow of temperature 60-80℃.2) relatively high artesian flow rate.The single well artesian flow rate is as high as about 400-1500M3/day with a well head pressure of 0.5-3.8 atms.3) The water has high quality and the salinity is about 1-2.5 g/1 with pH=7.5-8.2.It belongs to Cl-HCO3-Na type or Cl-Na type with neutral to slightly alkline.In view of all available data and the results of mathematical modeling of the geo-temperature field,the regional tectonic farmework of an alternative emplacement of deep subsidences with uplifted basement protrusion,adequate combination of high thermore-sistivity sediment cover and high thermoconductivity basement are the main favorable factors for geothermal anomaly formed in the Nitnozhen Protrusion.Thermal water upwelling along the open fractures,making an additional contribution to heat transfer along with the conductive portion,gives rise to a even more intensive anomaly in some locations within me geothoermal field.The geothermal anomaly area with a thermal gradient of >4℃/100M and heat flow value of 1.5 HFU accounts to 660 square kilometers in the Niutuozhen Protrusion,including the Rongcheng Protrusion.The advantageous thermal water extraction conditions favor a prosperous direct use of the thermal water resources for spaceheating and greenhouse building in agriculture. |
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