BOREHOLE PUMP UNIT FOR SIMULTANEOUS OPERATION OF TWO BEDS WITH GAS BYPASS FROM UNDER PARKER SPACE (VERSIONS) Russian patent published in 2012 - IPC E21B43/14 

FIELD: oil and gas production.

SUBSTANCE: proposed pump unit comprises tube string, parker, string separator, cable, downhole motor, rod string, bypass, check and drain valve, and two separate bed product transfer pumps. Note here that bottom bed product transfer downhole pump is encased while top bed product transfer pump represents a rod-type pump. Bypass valves are arranged above and below perforation intervals in operation string. Separator, tight case accommodating downhole motor and electrically driven rotary pump furnished with cable seal and bypass are arranged above the parker. Separator, check and drain valves and eccentric bush are arranged above said tight case. Said eccentric bush is connected via branch pipe with blind adapter, bypass valve above which rod pump is arranged. Product mixer is arranged above rod pump. Note here that eccentric bush and mixer are communicated via bypass line.

EFFECT: separate transfer of beds product and gas bypass from under-parker space.

2 cl, 2 dwg