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河北博野某地热井结垢位置预测及影响因素分析
Authors
卜宪标
李华山
+4 more
梁海军
王令宝
郭啸峰
高涛
Publication date
1 January 2020
Publisher
Abstract
地热井开发过程中的碳酸钙结垢严重制约了地热能的可持续开发利用,为了给地热井阻垢技术的应用提供理论依据,对河北博野地热井X井结垢位置进行了数值模拟研究。基于地热井井身结构,利用WELLSIM软件,进行了结垢位置预测和结垢影响因素分析研究。研究结果表明:根据出口流体成分反推得到的井底流体温度为128.0 ℃;地热流体沿井筒上升过程中压力迅速降低,在井下56.10 m处发生闪蒸,其干度、CO_2分压随之发生突变;地热井内流体闪蒸位置随CO_2质量分数、NaCl质量分数和地热流体流量增大而下移,其中CO_2质量分数对地热水闪蒸位置的影响最大。现场防垢时,潜水泵的下入深度或阻垢剂的加注深度均应在闪蒸点56.10 m以下。研究表明,控制井口压力和流量可以调节闪蒸位置,实现地热开采与防垢技术的协同优化
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Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
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oai:ir.giec.ac.cn:344007/34735
Last time updated on 04/12/2021
Institutional Repository of GuangZhou Institute of Energy Conversion, CAS
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.giec.ac.cn:344007/34733
Last time updated on 04/12/2021