Study on the influence law of fracturing fluid viscosity and liquid injection rate on propagation behavior of hydraulic fractures in laminated shale
BAI Yuesong
HU Yaoqing
LI Jie
Abstract：In order to study the influence law of fracturing fluid viscosity and liquid injection rate and other construction parameters on the hydraulic fracture propagation behavior in the process of hydraulic fracturing of laminated shale,firstly,the numerical simula-tion method is used to establish the relevant hydraulic fracture propagation model with the help of block discrete element method,and the simulation results are verified.Secondly,on the basis of the numerical model,the simulation study was carried out by setting different construction parameters.The study found that when the fracturing fluid viscosity and liquid injection rate are low,the pres-sure in the hydraulic fractures formed was low and evenly distributed,and the hydraulic fractures tend to spread along the bedding plane;when the fracturing fluid viscosity and liquid injection rate are high,the pressure in the fracture is high and the distribution dif-ference is large.At this time,the hydraulic fracture tends to expand vertically through the bedding plane.
Keywords：fracturing fluid viscosityliquid injection ratelaminated shalehydraulic fracturingfracture propagation
Publication Date：2023-12-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 18-24 )