| 供暖地热开采井筒温度损失模型及应用 |
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| 引用本文： | 豆惠萍.供暖地热开采井筒温度损失模型及应用[J].地质与勘探,2019,55(5):1276-1286. |
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| 作者姓名： | 豆惠萍 |
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| 作者单位： | 华北油田勘探开发研究院，河北沧州； 渤海钻探工程技术研究院，天津； 渤海钻探工程有限公司四川页岩气项目管理部，四川成都 |
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| 基金项目： | 国家科技重大专项（编号：2016ZX05022004）和中国石油天然气股份有限公司重大科技专项（编号：2017E-1511）联合资助。 |
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| 摘 要： | 地下热水开采过程，井筒周围持续散热导致地热水温度降低形成了井筒温度损失。目前关于井筒温度损失的研究很少，在地热利用方案的编写过程中难以确定设计排量下的井口热水温度，致使后续井网部署及单井配产困难，配产量与实际用热需求易产生供需矛盾。该文首次建立了地热井井筒温度损失模型。借助大型有限元软件COMSOL Multiphysics，以华北油田某潜山区块实际生产数据为例，进行热采井筒温度损失影响因素分析，并分别对实际生产中雾迷山组热水井和高于庄组热水井井筒温度损失进行了预测，为下一步地热开采方案的编制提供借鉴和理论指导。
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| 关 键 词： | 地热开采 温度损失 井筒 潜山井 |
| 收稿时间： | 2018/10/16 0:00:00 |
| 修稿时间： | 2019/8/30 0:00:00 |
A model of temperature loss in the wellbore of geothermal water exploitation for heating and application |
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| Dou Huiping.A model of temperature loss in the wellbore of geothermal water exploitation for heating and application[J].Geology and Prospecting,2019,55(5):1276-1286. |
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| Authors: | Dou Huiping |
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| Abstract: | In the geothermal water exploitation, continuous heat dissipation around the wellbore So far, the study on the temperature loss in the wellbore remains little, and it is difficult to determine wellhead water temperature under the designed water exploitation rate during preparation of a project of geothermal water utilization. Thus a contradiction between the single well water proration and the actual geothermal water needed will appear. To solve this problem, a model of borehole temperature loss of geothermal wells is established in this work. By virtue of the finite element software COMSOL Multiphysics, we use this model to analyze the influence factors of the temperature loss of the wellbore on real data of a well in a buried-hill block of the North China oilfield. Then we predict temperature loss of geothermal wells in Wumishan Formation and Gaoyuzhuang Formation of this block, which are under production. The results will provide a reference and theoretical guidance for the compilation of geothermal exploitation project in the next step. |
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| Keywords: | geothermal exploitation temperature loss borehole buried hill well |
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