HYDROCYCLONE SEPARATION UNIT FOR PRELIMINARY TREATMENT OF WELL FLUID Russian patent published in 2023 - IPC B04C9/00 B01D17/38 B01D17/05 

FIELD: oil and gas industry.

SUBSTANCE: hydrocyclone separation unit contains a process tank, a hydrocyclone, a pipeline for supplying a gas-liquid mixture, a pipeline for removing the liquid phase from the hydrocyclone, a pipeline for removing the gas phase to a gathering line connected to a knockout drum having a pipeline for returning the collected liquid to the process tank. The process tank contains oil and water drainage pipelines. The hydrocyclone is made cylindrical and is the first stage of separation. The unit additionally contains, installed in series and interconnected: a demulsifier injection unit into which the liquid phase of a cylindrical-conical hydrocyclone enters, a centrifugal pump unit, a cylindrical direct-flow hydrocyclone of the second separation stage with pipelines for removing the liquid phase and a pipeline for removing gas to the collection line, connected to the knockout drum having a pipeline for returning the captured liquid to the process tank. Pressure sensors are installed in the inner wall and in the axial zone of the cone hydrocyclone. Phase level sensors are installed inside the process tank.

EFFECT: improved efficiency of separation of the water-oil-gas mixture of the well fluid.

2 cl, 1 dwg