《工程(英文)》 >> 2017年 第3卷 第2期 doi: 10.1016/J.ENG.2017.02.007
页岩气网络设计与运行之间的相互作用,包括CO2固存
Center for Process Systems Engineering, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
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摘要
随着能源需求的持续增长,作为非常规甲烷源(CH 4 )的页岩气显示出巨大的商业化潜力。但是,由于页岩气储层的渗透率极低,因此可能需要按顺序进行特殊程序,例如水平钻井,水力压裂,定期关井和注入二氧化碳(CO 2 )以提高天然气产量,最大程度地提高经济效益,并确保安全和无害环境的运营。尽管对此新兴技术进行了深入研究,但许多研究人员仅在孤立地研究页岩气设计和运营决策。实际上,这些决定是高度互动的,应该同时考虑。因此,本研究中解决的研究问题包括设计与运营决策之间的相互作用。在本文中,我们首先建立了页岩气藏的全物理模型。接下来,我们对重要设计和操作决策进行敏感性分析,例如井长,井眼布置,裂缝数量,裂缝距离,CO 2 注入速率和闭井调度,以获取增产效果。对页岩气网络复杂行为的深入见解。结果表明,页岩气产量最高的情况不一定是最有利可图的设计。钻探,压裂和CO 2 注入对这项技术的经济可行性具有重大影响。尤其是,由于成本高昂,除非使用CO 2 减税或补贴,否则使用CO 2 的增强气体回收(EGR)似乎不具有商业竞争力。隔离。研究还发现,设计和运营决策之间的相互作用非常重要,这些决策应同时进行优化。
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