Porous Media Compressed-Air Energy Storage (PM-CAES): Theory and Simulation of the Coupled Wellbore-Reservoir System
Porous Media Compressed-Air Energy Storage (PM-CAES): Theory and Simulation of the Coupled Wellbore-Reservoir System
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DOI：
10.1007/s11242-012-0118-6
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发表时间：
2013-03-01
影响因子：
2.7
通讯作者：
Pan, Lehua
中科院分区：
文献类型：
--
作者：
Oldenburg, Curtis M.;Pan, Lehua
电网上间歇性可再生能源供应的扩大可能受益于在含水层和枯竭油气藏等多孔介质系统（PM-CAES）中实施大规模压缩空气储能。尽管30年前的一个大型政府研究项目包括在含水层中进行空气注入和生产的测试，以及大量与洞穴相关的CAES文献，但仍然存在关于PM-CAES的水文和能量性能的基本问题。我们已经开发了严格的模拟能力PM-CAES，包括模拟耦合井筒油藏系统。通过考虑一个典型的PM-CAES井筒-储层系统，代表一个枯竭的油气藏，我们模拟了100个每日周期的PM-CAES。我们发现（1）PM-CAES可以储存能量，但PM-CAES中的普遍压力梯度导致储层中空间可变的能量储存密度，（2）PM-CAES的井筒-储层储存组件非常有效，（3）盖岩和水文密封沿着PM-CAES储层的适当尺寸防止过压扩散成为问题，以及（4）空气的注入和产出不会显著地调动储层中的残余液态水。
Expansion in the supply of intermittent renewable energy sources on the electricity grid can potentially benefit from implementation of large-scale compressed air energy storage in porous media systems (PM-CAES) such as aquifers and depleted hydrocarbon reservoirs. Despite a large government research program 30 years ago that included a test of air injection and production in an aquifer, and an abundance of literature on CAES mostly relevant to caverns, there remain fundamental questions about the hydrologic and energetic performance of PM-CAES. We have developed rigorous simulation capabilities for PM-CAES that include modeling the coupled wellbore-reservoir system. Through consideration of a prototypical PM-CAES wellbore-reservoir system representing a depleted hydrocarbon reservoir, we have simulated 100 daily cycles of PM-CAES. We find that (1) PM-CAES can store energy but that pervasive pressure gradients in PM-CAES result in spatially variable energy storage density in the reservoir, (2) the wellbore-reservoir storage component of PM-CAES is very efficient, (3) cap-rock and hydrologic seals along with proper sizing of the PM-CAES reservoir prevent excess pressure diffusion from being a problem, and (4) injection and production of air does not significantly mobilize residual liquid water in the reservoir.