Abstract
Aiming at the large error in productivity predication and incomplete consideration in completion parameters design of perforated horizontal well, a model which coupled the relationship of pressure and flow rate in reservoir seepage, near-wellbore inflow and wellbore flow was established. The impact of near-wellbore heterogeneity, wellbore flow pressure drop and completion parameters on the inflow profile of horizontal well is analysed. Studies showed that with a stronger near-wellbore heterogeneity, the inflow profile would fluctuate more seriously. Perforation density had a great influence on the inflow profile and local changes of it would bring a shunt effect. Completion design of variable density perforated horizontal well with an optimized inflow profile which was close to a standard profile would improve the horizontal well development effect. The achievement can provide directive meanings to productivity predication and completion parameters design of horizontal wells in oilfield.
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