Steam driven pump for sagd system

Details Steam driven pump for sagd system Steam driven pump for sagd system

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) E21B 43/24 (2006.01) F04B 47/08 (2006.01)

Patent

CA 2724058

A downhole pump is operated by a non-electric motor preferably a steam turbine. In a steam assisted gravity drain system the producing well is U-shaped. A steam supply line runs into the turbine that drives the pump after the steam supply passes through a packer. The steam exhaust runs through a shroud until the U-shaped well turns back to go up to the surface. Pump suction is thus separated from steam discharge to reduce mixing as the path of least resistance for the discharged steam when it exits the shroud is up to the surface. The exhaust steam keeps the produced fluids warm and flowing. An injector well runs parallel and slightly above the horizontal portion of the U-shaped producing well.

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