Oil field fracturing waste fluid treatment device

Abstract

The invention relates to the field of oil field wastewater treatment and particularly relates to an oil field fracturing waste fluid treatment device comprising a shearing tank, a coagulation reaction tank, a deposition water tank, an inclined plate water tank and a liquid storage tank, wherein the shearing tank is internally provided with a shearer; the shearer comprises a rotating shaft, an asynchronous motor and a plurality of first cutters; the plurality of first cutters are fixedly arranged on the rotating shaft in a staggered way along the direction from the top of the shearing tank to the bottom of the shearing tank; a plurality of second cutters are arranged on the inner side wall of the shearing tank in a staggered way; the shearing tank is communicated with the coagulation reaction tank through an S-shaped communicating pipe; the coagulation reaction tank is communicated with the deposition water tank, the deposition water tank is communicated with the inclined plate water tank in which an inclined plate is arranged, and the inclined plate water tank is communicated with the liquid storage tank. The fracturing waste fluid treatment device provided by the invention has the advantages that a polymer polymerization chain in a fracturing waste fluid is sheared at a high speed by using the plurality of groups of cutters so as to be chopped, the fracturing waste fluid is effectively degraded, and the viscosity of the fracturing waste fluid is reduced. No strong acid agents are used, so that the production cost is reduced, no potential safety hazards exist, and the safety is good.

Description

technical field [0001] The invention relates to the field of oilfield sewage treatment, in particular to an oilfield fracturing flowback liquid treatment device. Background technique [0002] Fracturing is one of the main measures to stimulate oil and gas wells. It uses high pressure to inject fracturing fluid into the formation to expand the fractures in the formation and create new fractures, and fill in the proppant to increase the permeability of the formation. The role of fracturing fluid is to transmit pressure, form formation fractures and carry proppant into fractures. Fracturing fluid is a heterogeneous and unstable chemical system formed by a variety of additives in a certain ratio. According to the chemical properties of the prepared materials and the final properties of the system, it can be divided into water-based fracturing fluid, oil-based fracturing fluid, emulsified fracturing fluid, etc. Cracking fluid, foam fracturing fluid, surfactant micellar fracturi...

AI Technical Summary

Problems solved by technology

In related technologies, a large amount of strong acid agents are usually used to degrade the fracturing flowback fluid to reduce the viscosity of the fracturing flowback fluid. Using such a degradation method not only increases the production cost; but also during the degradation process, due to the use of Strong acid agents also bring huge safety hazards to production

Images