| 井口水温与热储层温度关系的有限元模拟及实例剖析 |
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| 引用本文： | 陈墨香,张菊明.井口水温与热储层温度关系的有限元模拟及实例剖析[J].地质科学,1992,0(1):55-65. |
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| 作者姓名： | 陈墨香 张菊明 |
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| 作者单位： | 中国科学院地质研究所 |
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| 摘 要： | 热储温度是地热研究和地热资源开发中一个重要参数,但直接测量深部热储温度有时有困难。笔者在建立围岩体热动态方程和将热水井作为热管降温的热动态方程的基础上,以有限元法对围岩体的热过程和热水井的温度场进行分析研究,并以北京、冀中和湛江地区的热水井为例,揭示井口温度与热储温度之间的函数关系,从而求得热储温度或预测井口温度。
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| 关 键 词： | 地热 井口水温 热储温度 有限元法 数学模拟 |
| 收稿时间： | 1989-06-01 |
| 修稿时间： | 1989-06-01; |
SIMULATIONG OF RELATIONSHIP BETWEEN WATER TEMPERATURE AT WELL HEAD AND GEOTHERMAL RESERVOIR TEMPERATURE BY FINITE ELEMENT METHOD AND CASE STUDIES |
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| Chen Moxiang Zhang Juming Xia Sigao.SIMULATIONG OF RELATIONSHIP BETWEEN WATER TEMPERATURE AT WELL HEAD AND GEOTHERMAL RESERVOIR TEMPERATURE BY FINITE ELEMENT METHOD AND CASE STUDIES[J].Chinese Journal of Geology,1992,0(1):55-65. |
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| Authors: | Chen Moxiang Zhang Juming Xia Sigao |
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| Institution: | Institute of Geology, Academia Sinica, Beijing |
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| Abstract: | Geothermal reservoir temperature is one of important parameters in geothermal research and in development of geothermal resources.However,it can hardly be directly measured so- metime.From the water temperature at well head measured in pumping or gushing test,he geothermal reservoir temperature can be estimated by mathematical simulation. Thermal water pumping up from well can disturbe the geotemperature field in rock ar- ound the well,and the change of geotemperature field affects the heat exchange between ther- mal water and the surrounding rock simultaneously,The temperature field in surrounding rock can be simulated by finite element method,if the thermal water well was treated as a heat tube with a temperature-droping process in the surrounding rock.Mathematically,the simultaneous equations can solve the relationship between water temperature at well head and geothermal reservoir temperature There the geothermal reservior temperature can be esti- mated from the water temperature at well head,provided that the structure of thermal water well,the thermophysical parameters of the rock and the location of geothermal reservior were given. Based on observed data of geothermal wells in conbination with mathematical simulation of the temperature field for the wells in Beijing,Tanjin,central Hebei Province and Leizhou Peninsula,South China,this paper gives the calculations of geothermal reservior temperature, discusses on the relationship between water emperature at well head,well discharge,duration of pumping and depth of geothermal reservior. The method is only suitable to the case that the fluid in well is a single-phase liquid mi- dium,as used in this paper. |
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| Keywords: | Water temperature at well head Geothermal reservoir temperature Finite element method Mathematical simulation |
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