A Productivity Prediction Model for Multistage Fractured Horizontal Wells in Shale Gas Reservoirs

The tiny sizes of pores and throats in shale gas reservoir increase the complexities flow mechanisms, which challenge accuracy current productivity models during optimization design prediction for multistage fractured horizontal wells (MFHWs). This paper established a model MFHWs with cased hole completion open completion. couples matrix, fractures, wellbore using potential superposition principle considers multiple mechanisms flows reservoir, such as stress-sensitive effect, friction, well interference between fractures. Based on developed model, method reservoirs has been established, sensitivity impact factors was analyzed. analysis revealed that are suitable certain thickness. number fractures significant production reservoir. And at both sides have higher rate than intermediate ones wells. fracture half-length insignificant effect MFHWs. also increases pressure drop. friction findings this study can provide basis scientific evaluation reservoirs.