Application of high-lift submersible pumps for ultra-heavy oil in the Tahe Oil Field

The ultra-heavy oil reservoirs in the Tahe Oil Field are Ordovician fractured and vuggy carbonate reservoirs lack of heterogeneity. Since the level of pumping wells declines year by year, submersible pumps are recommended for heavy oil production. The application of submersible pumps in 25 well times showed that total production, previous production mode and geological characteristics were the main affecting factors. Both waterflood index curves and geological characteristics were taken into consideration. High-lift submersible pumps can maximize the potential of ultra-heavy oil.