Fracturing flow-back fluid treatment device

Abstract

The invention discloses a fracturing flow-back fluid treatment device, belonging to an oilfield wastewater treatment device. The fracturing flow-back fluid treatment device comprises a sewage lift pump, wherein a water outlet branch of the sewage lift pump is communicated with a fluid inlet of an inclined-tube oil removal and sand setting device, an oil removal inclined-tube set is arranged in the inclined-tube oil removal and sand setting device, and a fluid outlet of the inclined-tube oil removal and sand setting device is communicated with a pipe mixer through the lift pump; another water outlet branch of the sewage lift pump is connected with a dosing agitation tank, and a fluid outlet of the dosing agitation tank is communicated with the pipe mixer through a dosing pump; an outlet of the pipe mixer is communicated with a fluid inlet of an inclined-tube flocculating settling device, a clear water outlet of the inclined-tube flocculating settling device is communicated with a clear water bin through a clear water pump, and a sewage outlet of the inclined-tube flocculating settling device is communicated with a sludge pool through a sludge pump. The inclined-tube oil removal and sand setting device can achieve oil and sand removal functions; the dosing agitation tank, the pipe mixer, the inclined-tube flocculating settling device and the like can achieve a suspended solid removal function. By adopting the structure, continuous and online treatment operation can be realized so as to meet the continuous operation requirements of oil well fracturing.

Description

technical field [0001] The invention relates to an oil field waste liquid treatment device, in particular to a treatment device for oil well fracturing flowback liquid. Background technique [0002] Fracturing and acidizing of oil and water wells is one of the main production and injection processes in oilfields, and a large amount of waste fluid discharged from oil wells after fracturing must be treated before being used for fracturing operations or discharged, otherwise it will cause environmental pollution. In order to deal with these waste liquids, oil fields generally have water treatment stations, but remote oil wells or water-scarce areas are not suitable for construction of water treatment stations. At this time, it is necessary to use mobile water treatment devices for water treatment. The treatment of fracturing flowback fluid generally requires sand removal, oil removal, and suspended solids removal, but currently the following methods are adopted: the fracturing ...

AI Technical Summary

Problems solved by technology

Due to the long time-consuming natural precipitation of pre-dosing, poor continuous processing capacity of the equipment, and more main equipment; in addition, the filter bags and filter elements used as the core functional components of the filter will become clogged after a period of use, and need to be replaced frequently, and only Can be thrown away but not recycled, which again creates pollution

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