Numerical Simulation Study on Hydraulic Fracturing Parameters of Hard Roof
In order to understand the influence of hydraulic fracturing process parameters on the pressure effect of hard roof,numerical simulation software was used to study and analyze hydraulic fracturing.Based on the principle of hydraulic fracturing process,the fracturing effect under different fracturing fluid viscosities was analyzed.It was found that as the viscosity of the fracturing fluid continued to increase,the fracture deflection angle showed a gradually decreasing trend,and the deformation of the drilling hole wall also showed a gradually increasing trend.By analyzing the relationship between the viscosity of the fracturing fluid and the pressure gradient inside the rock,it was determined that the fracturing cost and effect reached the best when the viscosity of the fracturing fluid was 40 MPa·s,providing a certain reference for the design of subsequent hydraulic fracturing schemes.
NETL
NSTL
万方数据
