Productivity Calculation Models and Stimulation Ratio Analysis for Explosive Fracturing Wells

In order to improve the design and prediction level of explosive fracturing and enhance the effect of engineering application,the well productivity models for explosive fracturing were established with conformal transformation method,based on the principle of explosive fracturing and the reservoir seepage theory,including outside resistance model of fluid flowing from reservoir boundary to exploding fractures and internal resistance model of fluid flowing from fractures to well-bore.The calculation software is programmed by which the effects of reservoir parameters and fracture parameters on well stimulation are analyzed,taking Well F31-10 as an example.Results show that length,number and conductivity of explosive fractures could affect the stimulation effect from high to low degree.Under the condition of given fracture length and numbers,there will be optimum conductivity of explosive fracture,the production of Well F31-10 was increased to 1.365-2.115 times by explosive fracturing,and increasing fracture length and number is more favorable for stimulation than increasing dimensionless flow conductivity of fractures.