常州大学学报（自然科学版）2024，Vol.36Issue(4)：46-54,9.DOI:10.3969/j.issn.2095-0411.2024.04.006
裂缝泡沫流动特征及改进Dijkstra算法优势通道预测
Characteristics of foam flow in fractures and prediction of preferred paths by improved Dijkstra algorithm
摘要
Abstract
Foam flow characteristics in complex fracture networks are still unclear.In this study,a va-riety of combined visual fracture models were used to observe the flow characteristics of foam in the fracture.Then,the improved Dijkstra algorithm was used to determine the weighted graph of the fracture network nodes,and the preferred flow paths of the foam were predicted.The results show that the flow resistance reaches the maximum when the foam volume fraction is 90％.When the foam flows in parallel fractures with different openings,it flows preferentially in the fractures with large o-penings,and there is gas retention in cracks with small openings.In the complex fracture network model,the Dijkstra algorithm is improved based on the foam fluid's sweeping range and plugging mechanism,and the simulation results can be fitted to the experimental results to a certain extent.These findings reflect the necessity of considering fractures when foam flows in reservoirs.关键词
裂缝/泡沫/流动特征/改进Dijkstra算法/优势通道Key words
fracture/foam/flow characteristic/improved Dijkstra algorithm/preferred path分类
能源科技引用本文复制引用
徐正晓,李猛,李兆敏,李宾飞,陶磊,刘洋,于传康..裂缝泡沫流动特征及改进Dijkstra算法优势通道预测[J].常州大学学报（自然科学版）,2024,36(4):46-54,9.基金项目
江苏省高等学校自然科学研究面上项目(23KJB440001) （23KJB440001）
常州大学科研启动基金资助项目(ZMF23020202) （ZMF23020202）
教育部产学合作协同育人项目(231002394313828). （231002394313828）
