当前位置: X-MOL 学术Energy Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Review on Pore Structure Characterization and Microscopic Flow Mechanism of CO2 Flooding in Porous Media
Energy Technology ( IF 3.6 ) Pub Date : 2020-11-10 , DOI: 10.1002/ente.202000787
Yong Tang 1 , Chengxi Hou 1 , Youwei He 1 , Yong Wang 1 , Yulin Chen 1 , Zhenhua Rui 2
Affiliation  

Understanding of pore structure and microscopic flow mechanism at pore‐scale is significant for enhancing oil recovery by carbon dioxide (CO2) flooding. Herein, the pore structure characterization and the microscopic flow mechanism of CO2 flooding are analyzed and compared. The pore structure can be captured using experimental analysis, image analysis, and digital core technique. The digital core approach shows broad applications for pore structure characterization as it is reusable and visible. Pore‐scale flow can be directly observed using visual models; however, the pressure and temperature that visual models can withstand need to be improved. Use of X‐ray computed tomography (CT) and nuclear magnetic resonance (NMR) is preferred to monitor the fluid transport and distribution during CO2 displacement in actual cores. The flow in porous media can be also modeled by molecular dynamics (MD) and the lattice Boltzmann method (LBM). The LBM is efficient in simulating multiphase fluid flow in porous media because it achieves parallel computing and can deal with complex boundaries. Herein, detailed analysis for pore structure characterization and of the microscopic flow mechanism of CO2 flooding in porous media is presented, which can further help to design and optimize CO2 flooding schemes to improve oil recovery.

中文翻译:

多孔介质中CO 2驱替的孔隙结构表征及微观流动机理研究进展

对孔结构的孔结构和微观流动机理的了解对于提高二氧化碳(CO 2)驱油的采收率具有重要意义。此处,CO 2的孔结构表征和微观流动机理分析和比较洪水。可以使用实验分析,图像分析和数字核心技术捕获孔结构。数字岩心方法可重复使用且可见,因此在孔隙结构表征方面显示出广泛的应用。可以使用视觉模型直接观察孔隙水流量。但是,视觉模型可以承受的压力和温度需要改进。优选使用X射线计算机断层扫描(CT)和核磁共振(NMR)来监测CO 2期间的流体传输和分布实际岩心的位移。多孔介质中的流动也可以通过分子动力学(MD)和晶格玻尔兹曼方法(LBM)进行建模。LBM在模拟多孔介质中的多相流体流动方面非常有效,因为它实现了并行计算并可以处理复杂的边界。本文对孔隙结构特征进行了详细的分析,并对多孔介质中CO 2驱替的微观流动机理进行了详细分析,这可以进一步帮助设计和优化CO 2驱替方案以提高采油率。
更新日期:2021-01-05
down
wechat
bug