A Reservoir/Wellbore‐Coupling Model for the Pressure, Flow Rate, and Optimum Perforation Distribution in Gas Wells

摘要: Perforated vertical wells are being used in the petroleum industry around world. Perforations only channel between wellbore and reservoir. Accurate prediction of inflow performance for perforated is great significance to reservoir engineering analysis perforation optimization design. The a well depends on fluid that enters flow within section. total pressure drop dominated by gravitational effects, rather than frictional effects as horizontal wells. Better understanding wellbores helpful engineers design successful optimize performance. A considerable amount analytical numerical work has been performed both open-hole Dikken presented first semianalytical model couples with turbulent wellbore. Ouyang proposed reservoir/wellbore-coupling using an model. Ansah et al. developed finite-element well-inflow asymmetric spiral distribution cone-shaped perforations predict vertical-well completions. Pressure-drop calculations have since discussed variety ways. Islam allowing effect through wellbore, but this cannot analyze impact Landman provided allows finding optimal increase productivity Hagoort studied single-phase Darcy single semi-infinite porous medium. illustrated completion parameters main factors influence profiles wells, there not any investigation application these including drop. In study, mathematical rate presented. basic defined applied infinite-conductivity finite-conductivity algorithm recommended solve models data “X” help evaluate models.