MULTIPHASE MIXTURES TRANSPORTATION WAY, AS WELL AS PUMP PLANT Russian patent published in 2009 - IPC E21B43/12 E21B43/40 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions refers transportation way of multiphase mixtures, particularly hydrocarbons from borehole by using positive displacement pump. According to the method multiphase mixture is dispensed by using positive displacement pump with following separation of gas phase and liquid phase. According to the invention liquid phase and gas phase are separated in positive displacement pump. From pressure side, partial liquid flow is branched from separated liquid phase of main transportation flow and delivered to thrust face of at least one ejector pump mounted as supply aid for suction side of positive displacement pump. Pump plant is provided with positive displacement pump with the case wherein discharge chamber is formed, and suction main. This main particularly approaches the borehole. According to the invention positive displacement pump is designed as polyphase pump. The case of discharge chamber accommodates separation unit providing separation of gas and liquid phase in discharge chamber. Delivery line connects discharge chamber of discharge chamber and high-pressure side of at least one ejector pump mounted from suction side towards positive displacement pump discharge, and supplies liquid phase separated positive displacement pump to ejector pump.

EFFECT: improved pumping multiphase mixture and simultaneously restricted required pump plant costs.

13 cl, 1 dwg