Impacts of boundary conditions on reservoir numerical simulation and performance prediction of enhanced geothermal systems
Impacts of boundary conditions on reservoir numerical simulation and performance prediction of enhanced geothermal systems
复制标题
边界条件对增强型地热系统储层数值模拟和性能预测的影响
DOI：
10.1016/j.energy.2019.05.140
复制
发表时间：
2019-08
期刊：
影响因子：
9
通讯作者：
Liao Shengming
中科院分区：
文献类型：
--
作者：
Chen Tairu;Liu Gang;Liao Shengming
裂缝性储层边界条件是地热系统数值模拟和动态预测的关键，但在以往的研究中很少受到关注。根据共和盆地地热特征，建立了裂缝性储层与双闪式地热电站的集成模型，比较了“回灌”和“不流动”边界条件下EGS的取热和发电能力。“补给”边界条件允许物质和热量的通量跨越水库边界，而“无流量”不允许这样的通量。结果表明，在“无流”边界条件下，忽略了水库周边的取热潜力。此外，边界物质通量和热通量对热提取过程的影响在初期有限，但在后期影响显著。此外，与“无流动”边界条件下的EGS相比，“充电”边界条件下的EGS寿命延长了20%，并产生了8%的电力。研究还发现，在两种边界条件下，EGS在初始阶段都保持了较高的发电性能，而在随后的阶段，发电量和热效率显著下降。(C)2019爱思唯尔有限公司版权所有。
Fractured reservoir boundary conditions are crucial to numerical study on reservoir simulation and performance prediction of an enhanced geothermal system (EGS) but have received little attention in previous studies. We established an integrated model involving fractured reservoir and Double-flash geothermal power plant to compare heat extraction and power generation of the EGS under "recharge" and "no-flow" boundary conditions based on geothermal characteristics of Gonghe Basin, China. The "recharge" boundary conditions allow fluxes of mass and heat to cross reservoir boundaries, whereas the "no-flow" disallow such fluxes. The results show that the heat extraction potential around the periphery of the reservoir is overlooked under "no-flow" boundary conditions. Moreover, the fluxes of mass and heat across the reservoir boundaries exert limited influence on heat extraction process in initial stage, but they affect the process significantly in later stage. Additionally, compared with the EGS under "no-flow" boundary conditions, that under the "recharge" has a longer lifespan of 20%, and produces 8% more electricity power. It is also found the EGS maintains high-level power generation performance in the initial period under both boundary conditions, while the electricity output and thermal efficiency decrease significantly in the following stage. (C) 2019 Elsevier Ltd. All rights reserved.
登录
查看更多内容
基于松辽盆地远景地热水力模拟的强化地热系统参数研究
影响因子：
6.4
作者：
Zhu, Jialing;Li, Jun;Lan, Chengyu;Jin, Xianpeng
通讯作者：
Jin, Xianpeng
DOI：
--
发表时间：
2013
期刊：
Geophysical and Geochemical Exploration
影响因子：
--
作者：
Xue Jian
通讯作者：
Xue Jian
影响因子：
3.9
作者：
Chao Zhang;G. Jiang;Yizuo Shi;Zhuting Wang;Yi Wang;Shengtao Li;X. Jia;Shengbiao Hu
通讯作者：
Chao Zhang;G. Jiang;Yizuo Shi;Zhuting Wang;Yi Wang;Shengtao Li;X. Jia;Shengbiao Hu
影响因子：
3.9
作者：
Baria, R;Baumgärtner, J;Sato, Y
通讯作者：
Sato, Y
影响因子：
3.9
作者：
P. Jeanne;J. Rutqvist;D. Vasco;Julio Garcia;P. Dobson;M. Walters;C. Hartline;A. Borgia
通讯作者：
P. Jeanne;J. Rutqvist;D. Vasco;Julio Garcia;P. Dobson;M. Walters;C. Hartline;A. Borgia