Inert carbon nanoparticles for the assessment of preferential flow in saturated dual-permeability porous media
Inert carbon nanoparticles for the assessment of preferential flow in saturated dual-permeability porous media
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用于评估饱和双渗透性多孔介质中优先流动的惰性碳纳米粒子
DOI：
10.1021/acs.iecr.7b00194
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
L. M. Cathles
中科院分区：
文献类型：
--
作者：
Yao Chuanjin;Zhao Yushi;Lei Guanglun;T. S. Steenhuis;L. M. Cathles
了解非均质环境中的优先流动对于提高油气采收率、地热能开采以及成功封存化学废物和二氧化碳至关重要。使用纳米颗粒与化学示踪剂的双示踪剂测试可以指示优先流动。构建了具有由低渗透性环包围的高渗透性芯通道的双渗透性模型，并用于确定用于该应用的惰性碳纳米颗粒示踪剂的可行性。进行了一系列柱实验，以证明这种纳米粒子示踪剂如何可以用于在异质环境中实施双示踪剂测试。结果表明，通过适当选择和控制注入速率，纳米颗粒与化学示踪剂一起可以评估非均质环境中的优先流。结果还实现了双示踪剂测试在异质环境中同时注入化学和纳米粒子示踪剂。
Knowledge of preferential flow in heterogeneous environments is essential for enhanced hydrocarbon recovery, geothermal energy extraction, and successful sequestration of chemical waste and carbon dioxide. Dual tracer tests using nanoparticles with a chemical tracer could indicate the preferential flow. A dual-permeability model with a high permeable core channel surrounded by a low permeable annulus was constructed and used to determine the viability of an inert carbon nanoparticle tracer for this application. A series of column experiments were conducted to demonstrate how this nanoparticle tracer can be used to implement the dual tracer tests in heterogeneous environments. The results indicate that, with the injection rate selected and controlled appropriately, nanoparticles together with a chemical tracer can assess the preferential flow in heterogeneous environments. The results also implement the dual tracer tests in heterogeneous environments by simultaneously injecting chemical and nanoparticle tracers.