METHOD AND DEVICE FOR LIQUID LIFTING FROM BORES Russian patent published in 2008 - IPC F04B47/00 

FIELD: engines and pumps.

SUBSTANCE: method of lifting includes lifting of liquid in a bottom step by means of an electric immersion pump, separation of liquid from gas, directing gas into annular space and lifting liquid into a top step by means of an electric deep well sucker rod pump (DWSRP). Liquid in a bottom step is lifted to a height exceeding the level of inlet into the DWSRP, at that portion liquid is directed into an annular space through holes, made in a string of pump compressor pipes (PCP) at the height exceeding the level of inlet into the DWSRP. The lifting device comprises electric deep well pump, separator and PCP to lift liquid to the top step. On the string PCP above the level of inlet into DWSRP holes are made communicating the hollow space of the string PCP with annular space.

EFFECT: decreasing load to a string of pump rods due to decreased length and weight.

2 cl, 1 dwg, 1 ex