Patent ID: 6173774
Filing Date: 2001-01-16
Classification: E21B

Abstract:
A downhole well pump assembly, comprising:a first pump section having an outlet and a production fluid intake for receiving a mixture of oil and water from a production zone;a second pump section having an outlet and an intake which is connected to the outlet of the first pump section;a first separator section having an inlet connected to the outlet of the second pump section for receiving and separating the oil and water, the first separator section having a water discharge and an oil outlet for discharging oil to flow to the surface; anda second separator section having an inlet connected to the water discharge for further separating oil from the water, a purer water outlet for discharging into a desired location and a less pure water outlet connected to the intake of the second pump section downstream of the first pump section for passing the less pure water back through the first and second separator sections.