Geothermal energy extraction in CO2 rich basin using abandoned horizontal wells

被引：133
作者：
Sun, Fengrui [1 ,2 ,3 ]
Yao, Yuedong [1 ,2 ,3 ]
Li, Guozhen [3 ]
Li, Xiangfang [2 ,3 ]
机构：
[1] China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
[2] China Univ Petr, Coll Petr Engn, Beijing 102249, Peoples R China
[3] China Univ Petr, Beijing 102249, Peoples R China
来源：
ENERGY | 2018年 / 158卷
基金：
中国国家自然科学基金;
关键词：
Geothermal energy; CO2; circulating; Horizontal wells; Full-length wellbore modeling; Productivity; Injection parameters; HEAT-TRANSFER CHARACTERISTICS; DUAL-TUBING WELLS; MASS-TRANSFER CHARACTERISTICS; MULTICOMPONENT THERMAL FLUID; SUPERHEATED STEAM FLOW; POWER-GENERATION; WORKING FLUID; PUMP SYSTEM; OIL-WELLS; NUMERICAL-SIMULATION;
D O I：
10.1016/j.energy.2018.06.084
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Compared with traditional oil and gas resources, geothermal energy processes the advantages of zero emission, low investment and high productivity, etc. in this paper, a model is developed for simulating CO2 circulating in a geothermal horizontal well. The energy and momentum balance equations of CO2 flow in long tube and annuli are solved numerically. The relationships between geothermal productivity and injection parameters are revealed. It is concluded that: (a) The standard of choosing parameters for measuring the rate of geothermal production is whether or not the parameter can reflect the heat transfer rate or fluid temperature rise. (b) Taking multiple factors (temperature decrease, enthalpy decrease, small increase in heat production rate and increase in cost) into consideration, a small mass injection rate is recommended to obtain a better economic performance. (c) Taking multiple factors (temperature increase, decrease in heat production rate and increase in cost) into consideration, a small injection pressure is recommended to obtain a better economic performance. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：760 / 773
页数：14
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