Design and testing of ESP-based dual-action pumping system

Authors: K.V. Valovsky, G.Yu. Basos, V.M. Valovsky (TatNIPIneft), A.R. Rakhmanov, R.N. Akhmadiev (Almetjevneft Oil and Production Department)
Theoretical and practical aspects related to improved performance of oil wells producing heavily water-cut oil are considered. The solution has been found in ESP-based dual-action pumping system providing for downhole oil and formation water segregation due to pressure differential, lift of water-free oil to surface and simultaneous pumping of water to water-absorbing formation.

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