CONTROL OF CYCLONE LOCATED UNDER WATER Russian patent published in 2015 - IPC E21B43/36 B04C11/00 

FIELD: oil and gas industry.

SUBSTANCE: invention proposes a system and a method of control of a cyclone located under water and intended for separation of oil from water. A cyclone is located so that it can receive water together with an oil component via an inlet pipeline; oil is separated from water and supplied through an outlet oil hole to an outlet oil line, and water is supplied through an outlet water hole to an outlet water line. The system includes a control valve installed in the outlet oil hole and the outlet oil line at the cyclone outlet, the first measuring pressure drop transducer located between the inlet pipeline and the cyclone outlet oil hole, and the second measuring pressure drop transducer located between the inlet pipeline and the cyclone outlet water hole. In the outlet water hole or the outlet water line there located is a sensor intended to measure oil content and functionally connected to the control valve with control means. Besides, the control valve can be operated according to the specified value of the ratio between the first and the second pressure drops; besides, this setpoint and a degree of opening of the control valve can be controlled in response to variation of oil content in water, which is measured with the specified sensor.

EFFECT: proposed group of inventions provides more accurate control and verification of a separation effect.

6 cl, 1 dwg