公开(公告)号：US11568111B2

公开(公告)日：2023-01-31

申请号：US17825264

申请日：2022-05-26

申请人： Southwest Petroleum University

发明人： Hangyu Zhou ,  Jianchun Guo ,  Tao Zhang ,  Kun Sun ,  Mingyong Zeng

IPC分类号： G06F30/28 ,  G06F119/14 ,  G06F111/10

摘要： The present invention discloses a numerical simulation method for proppant transport considering wall-retardation effect, comprising the followings: establish a physical model of laboratory experiment on proppant transport with a large flat-panel device; establish a drag coefficient model considering wall-retardation effect according to the numerical simulation experiment; establish a computational geometric model; set boundary conditions and physical parameters of the geometric model according to the two-fluid simulation method for solid proppant quasi-fluidization; verify the grid independence of the computational geometric model to obtain the transport characteristics and placement pattern of the proppant in fractures. The present invention employs a numerical simulation method to study the migration and distribution patterns of proppant under the retardation effect of narrow walls during the hydraulic fracturing. The method is reliable in principle and can accurately predict proppant transport in subsurface hydraulic fractures with consideration of the wall-retardation effect on proppant transport.