Numerical simulation of proppant migration and sedimentation behavior in complex fractures based on computational fluid dynamics

被引:4
|
作者
Zhao, Kangjia [1 ,2 ]
Wang, Jie [1 ,2 ,3 ]
Xu, Hualei [1 ,2 ]
Zhang, Liangjun [1 ,2 ]
Jiang, Houshun [1 ,2 ]
机构
[1] Yangtze Univ, Cooperat Innovat Ctr Unconvent Oil & Gas, Wuhan 430100, Hubei, Peoples R China
[2] Yangtze Univ, Hubei Key Lab Drilling & Prod Engn Oil & Gas, Wuhan 430100, Hubei, Peoples R China
[3] China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
基金
中国国家自然科学基金;
关键词
TRANSPORT;
D O I
10.1063/5.0167046
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The migration and sedimentation behavior of proppant in complex fractures plays a vital role in the formation of fractures with high conductivity. Most of the existing studies on proppant sedimentation and migration are based on a single vertical fracture model that propagates in the same direction. However, due to in situ stress and reservoir heterogeneity, the propagation of fractures in reservoirs will produce multiple branch fractures that intersect with the main fractures and have a certain inclination angle. Therefore, it is necessary to study the sedimentation and migration behavior of proppants in inclined complex fractures. In this paper, the proppant particles sedimentation law in fractures is studied based on computational fluid dynamics. By changing the particle size, volume fraction, and inlet flow velocity of proppant, the migration and sedimentation law of proppant in a single fracture is simulated and verified. Then, through the establishment of a complex fracture model with multiple branches, and from the four dimensions of the vacant length of the front edge of the sand embankment, the length of the sand embankment, the highest point of the sand embankment, and the effective laying area of the proppant, the angle between the main and branch fractures in the complex fractures, the fracture angle and the inlet flow velocity, as well as the location relationship of the branch fracture setting and the migration and sedimentation of the proppant in the complex fractures are explored.
引用
收藏
页数:17
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