SYSTEM OF COLLECTION, TRANSPORTATION AND TREATMENT OF OIL, GAS AND WATER Russian patent published in 2017 - IPC B01D17/02 E21B43/34 

FIELD: oil and gas industry.

SUBSTANCE: system comprises an input two-phase separator (2) with pipeline (3) of feeding the separated therein high-pressure gas to the consumer, a three-phase decanter-separator (5) with pipeline (6) of low-pressure gas discharge to the flare stack, a pipeline (7) of oilfield wastewater supply to water treatment unit connected to the buffer-separator (12) connected to the pipeline (14) of wastewater feeding into the horizontal flare (HFU) (15). A pump (16) and an ejector (17) of "liquid-gas" type are mounted on the pipeline (14), which receiving chamber is connected to the pipeline (6) of low-pressure gas discharge to the flare stack. Buffer-separator (12) gas outlet is connected to the pipeline (6) of low-pressure gas discharge to the flare stack. The system may be provided with an additional separator (21) connected to the ejector (17) via gas inlet and to the gas supply to the horizontal flare HFU (15) via gas outlet. Liquid yield in the additional separator (21) is connected to the input of the buffer-separator (12).

EFFECT: invention improves utilisation of oil and gas wastewater.

5 cl, 3 dwg