Efficient air floatation treatment integrated device for ternary composite flooding oilfield produced water

Abstract

The invention discloses an efficient air floatation treatment integrated device for ternary composite flooding oilfield produced water. The device is divided into a contact zone, a separation zone, a water outlet zone and an oil receiving zone, wherein the contact zone is connected with a water distribution pipe, a viscosity online detector is arranged on the water distribution pipe, a dissolved air releaser is arranged in the contact zone, the inlet end of the dissolved air releaser is sequentially communicated with a pressure adjusting valve and a dissolved air tank, the inlet end of the dissolved air tank is sequentially connected with a dissolved air pump and an air compressor, a water pipeline connected with the inlet end of the dissolved air pump is communicated with the water outlet zone, the contact zone is separated from the separation zone by a division plate, an oil scraper is arranged in the oil receiving zone and driven by a motor, dirty oil in the oil receiving zone is scraped into an oil receiving tank which is communicated with an oil storage tank, the outlet end of the oil storage tank is connected with the inlet end of an oil receiving pump, and a water outlet tank is arranged in the water outlet zone and communicated with a water collecting pipe. After oil droplets and suspended matters in water are caught through micro bubbles, the oil droplets and the suspended matters are brought to the surface of the water along with floating of the bubbles, so that the purpose of removing the oil and the suspended matters is achieved.

Description

Technical field: [0001] The invention relates to a device for removing dirty oil and suspended matter in the produced water of three-element compound flooding oil fields in the technical field of oil field sewage treatment. It specifically relates to an integrated device for high-efficiency air flotation treatment of produced water in ASP flooding oilfields. Background technique: [0002] With the in-depth development of oilfields, in order to ensure the stability of crude oil production, oilfield water flooding is currently gradually transitioning to chemical agent flooding (common polymer flooding, high concentration polymer flooding, ASP flooding, etc.). Due to the different return conditions of the chemical flooding agent in different development stages of the chemical agent produced water, the water quality characteristics of the produced water are constantly changing, and the viscosity of the water phase changes greatly. Severe emulsification, complex water components...

AI Technical Summary

Problems solved by technology

It is difficult to meet the requirements of conventional water treatment to separate the oil droplets and suspended solids in the produced water of the ASP flooding oil field by air flotation bubble diameter, which directly affects the effect of oil removal and suspended solids treatment in the produced water of the ASP flooding oil field

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