Study on the Optimization of Staged Fracturing of a Horizontal Well in a Tight Gas Reservoir with Low Permeability

Staged fracturing of a horizontal well is an important technology for the development of hard-to-recover tight gas reservoirs with low permeability,and furthermore,the optimization design of fracturing parameters is the basis for the development of this type of reservoirs.The author raises a method,that is,PEBI grid densification is applied to optimize staged fracturing parameters in view of the conventional grid densification and the shortcomings of gas reservoir engineering in describing fracturing of a horizontal well.The influence of horizontal section length,number of fractures,fracture length and fracture conductivity on the productivity of a horizontal well is studied by setting up a geology model based on a case of a tight gas reservoir with low permeability.The study result is significant to the study on permeable regularity of a horizontal well and to the optimization of parameters of a horizontal well.