Patent ID: 6457531
Filing Date: 2002-10-01
Classification: E21B

Abstract:
A downhole water separation system for use in a wellbore, the system comprising:a packer disposed in the wellbore and connected to the wellbore such that the packer separates a production zone from an injection zone; a separator having an inlet and a first outlet and a second outlet such that a produced hydrocarbon and water mixture enters from the production zone through the inlet and is separated into an hydrocarbon-rich stream and a water-rich stream that can be ejected through the first and second outlets respectively; and an encapsulated device in fluid communication with the separator for pressurizing the hydrocarbon and water mixture for separation comprising: a device body forming a chamber having an upper and lower surface such that the upper surface includes a device outlet and abuts an upper connection that includes a pressure seal and the lower surface includes a device inlet in fluid communication with the produced hydrocarbon and water mixture and abuts a lower connection; a pump assembly supported by the device body, with a pump inlet in fluid communication with the produced hydrocarbon and water mixture and a pump outlet in fluid communication with the pressure sealed device outlet; and an electric submersible motor assembly.