A submersible system is provided for viscous fluids recovery making use of a newly designed rotary displacement sliding-vane pump. As opposed to sucker rod and surface-driven PCP pumps also used for viscous oil extraction, the system in question does not include elastomers (requiring selectin to match the fluid being extracted) and forgoes the line of rods, hence there are no limitations for lift it generates and it could be deployed even in horizontal wells.

The first sample has been in operation for almost a year with average flow about 10 m3/day and reservoir conditions of 70 CP.

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