The paper discusses ways to improve efficiency of wells producing heavily water-cut oil using technologies based on downhole gravity oil and water separation. The technological solutions include systems for alternate discharge of oil and water to the inlet of downhole pump, devices for separate lift of oil and water, ESP-based dual-action pumping systems …
This paper discusses some aspects of improving water-producing wells operation through the use of double-action ESP pumping systems for dump flooding to maintain reservoir pressure. These pumping systems provide for down-hole gravity separation of crude oil and associated water. Then, either low-water-cut oil is produced to the surface while most of …