Mixed pickling system for fracturing truck

Abstract

The invention relates to the field of oil and gas field acid fracturing construction devices, and discloses an acid mixing tank and a buffer tank; the acid mixing tank comprises a tank body, a cylindrical partition plate is fixedly connected in the tank body, and the tank body is divided into a first stirring cavity and a second stirring cavity by the partition plate; and a first stirring rod and a second stirring rod which respectively extend into the first stirring cavity and the second stirring cavity are rotationally connected in the tank body. The device has the following advantages and effects that the first stirring cavity and the second stirring cavity are formed in the tank body, and acid fracturing fluid is mixed, stirred and conveyed in turn through the two stirring cavities, so that the mixing continuity of the acid fracturing fluid is improved, the use amount of an acid storage tank is reduced, and the load of a mixing vehicle is reduced; and by using the mixed pickling system, the automatic control of mixing and stirring of the acid fracturing fluid is realized.

Description

technical field [0001] The invention relates to the field of acidizing and fracturing construction devices for oil and gas fields, in particular to a mixed acid washing system for fracturing vehicles. Background technique [0002] Acid fracturing is the most effective stimulation measure for carbonatite and complex lithology fractured reservoirs. The quality of acidizing fracturing fluid directly determines the quality of improving formation permeability. The main components of acidizing fracturing fluid include hydrochloric acid, hydrofluoric acid, thickener (polyacrylamide), corrosion inhibitor, drainage aid, surfactant, etc. , in the acidizing operation, it is necessary to mix all the materials evenly in advance, and the key technology restricting the acidizing operation is the continuous mixing of acid liquid. At present, the mixing of acidizing fracturing fluids adopts the traditional method, which is mainly to manually calculate and weigh, and then inject the concentr...

AI Technical Summary

Problems solved by technology

However, due to the large demand for acidified fracturing fluid, a large number of acid storage tanks are required, which increases the load of the mixing truck

Simultaneous batch fluid dosing, the cost of fracturing equipment is high. With the development of fracturing technology, the traditional intermittent acid dosing method has gradually failed to meet the production requirements of acid fracturing. At present, there is no such acid sizing with practical application value in China. Continuous mixing and supplying device for fracturing fluid

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