Research Of Multiple Fracturing Horizontal Well Productivity In Unconventional Tight Reservoir

With the rapid development of the national economy,growing demand for oil and gas resources,so dense oil reservoir development become a focus in the study of scholars at home and abroad,Mining dense reservoir fracturing horizontal well as an efficient way to get more and more widely used.Unconventional tight Reservoir development is difficult,Multiple Fracturing Horizontal Well costs are usually higher,Because of the horizontal well productivity is directly related to the economic benefits of oil and gas field development,So fracturing horizontal well productivity get more and more attention,Unconventional tight Reservoir Fracturing horizontal well produtivity calculation is not yet mature,Research of Multiple Fracturing Horizontal Well Productivity has important theoretical and practical significance.Based on the analysis of Multiple Fracturing Horizontal Well filtering characteristic in Unconventional tight Reservoir,Using the conformal mapping,the potential theory and potential superposition principle,we reaserched the productivity of multiple fracturing horizontal well in Unconventional tight Reservoir and the optimization of fracturing parameters.The main contents are the following:(1)Using the the potential theory and the conformal mapping,we built the potential distribution of single fracture in the vnconventional tight reservoir,considering the start-up pressure gradient;(2)Using the potential superposition principle,we built the potential distribution of multi fractures in the unconventional tight reservoir,considering the different fracture characteristics and filtrational resistance in the fracture;(3)Using Microsoft VBA macro language to write the program code to sort out the fracture parameters,we can get the coefficient matrix of equation;based on the coefficient matrix,we can write the MATLAB program code to calculate productivity of multiple fracturing horizontal well;(4)Instances have been carried out to verify the capacity model;On the basis of capacity model,we analysis unconventional tight Reservoir parameters and fracture parameters on the influence of the horizontal well productivity.