Optimization Design Of Horizontal Well Fracturing In Low Permeability Reservoir With Fracture Interference Propagation

At present,China is still in a state of energy shortage.Multi-cluster fracturing technology of horizontal Wells in low permeability reservoir is one of the effective means to develop low permeability reservoir,which can improve oil and gas production and recovery efficiency.In this paper,the optimal design of multi-cluster horizontal Wells under fracture interference in low permeability reservoirs in China is carried out.In this paper,finite element simulation software is used to calculate the propagation of multiple clusters of fractures under mutual interference during fracturing,and the influence of interfracture interference on fracture parameters is analyzed.Secondly,C++ programming language is used to write and generate fracture data files,which provide basic data for the subsequent reservoir numerical simulation.Finally,on this basis,this paper uses the generated fracture data file to predict the production of horizontal Wells in block X under the condition of staged multi-cluster fracturing.By comparing the effects of different fracture parameters on production,it provides a reference for optimizing multi-cluster fracturing design of horizontal Wells.The experimental results show that different fracture segment spacing and cluster spacing make the fractures suffer different stress disturbance,present different fracture morphology,and the fracture conductivity is different.The optimal productivity results can be obtained with appropriate fracture spacing.When considering stress interference,when the distance between fractures is relatively long,the flow area of the fluid is larger,so a certain amount of fracture interference may be beneficial for improving well production.