Numerical Simulation On Fracture Propagation Of Hydraulic Fracturing Assisted By Radial Well

In today’s development of unconventional oil and gas resources characterized by low porosity and low permeability,radial well assisted hydraulic fracturing technology has increasingly become an effective way of reservoir reconstruction.However,the current research on the fracture propagation law of hydraulic fracturing guided by radial wells is not yet perfect.The research on the influencing factors of fracture propagation is not specific,leading to the lack of theoretical basis for the construction of radial well fracturing site.In this regard,the radial auxiliary hydraulic fracturing wells as the research object,through the research on Adaptability of radial well fracturing assisted and the influence of different factors on the analysis of cracks,crack the radial hydraulic fracturing wells auxiliary expansion law,and provide some design parameters for fracturing.The results show that: the pressure of the pressure index is better high layer;horizontal stress difference and influence of Poisson’s ratio and radial wells on wellbore stability obviously;porosity,permeability,reservoir thickness,gas saturation and formation pressure are the main factors influencing the selection of well and layer.With the azimuth and horizontal stress difference,the increase of Young’s modulus on the fracture strength of radial guide wells with reduced;permeability,well diameter,well length,Poisson ratio,fracturing fluid,fracturing fluid viscosity increases the displacement of radial well guide fracture strength enhancement.Multi radial wells produce porous interference in the near wellbore area,forming complex and multiple fractures.The influence of each factor on fracture propagation beyond the stress interference area is consistent with single radial well,forming multiple fractures.