Proppant prepared by utilizing industrial tailings and preparation method thereof

Abstract

The invention relates to a proppant. Preparation raw materials of the proppant comprise magnesium ore tailings, iron ore tailings and soft clay, or further comprise boron ore tailings or comprise the boron ore tailings, silica and the soft clay, or further comprise the magnesium ore tailings or comprise the boron ore tailings, the iron ore tailings and the soft clay. A preparation method of the proppant comprises the following steps: firstly respectively performing light burning treatment on the magnesium ore tailings, the boron ore tailings and the silica, and further respectively performing powder grinding through a ball grinder; respectively performing drying treatment on the iron ore tailings and the soft clay, and further respectively performing powder grinding through the ball grinder; then weighing the raw materials according to a mixture ratio, and uniformly mixing to get a premix; performing granulation and screening on the premix; then sending into a rotary kiln, firing and performing heat preservation; and firing to get ceramisite, and screening to get the proppant. The proppant disclosed by the invention has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high diversion capacity, low breaking rate and the like, and the preparation method has the advantages of low energy consumption and large capacity.

Description

technical field

[0001] The invention relates to a fracturing proppant and a preparation method thereof, in particular to a high-strength ceramsite proppant synthesized from industrial tailings and a preparation method thereof. Background technique

[0002] Fracturing refers to a method of using hydraulic action to form cracks in oil and gas layers during oil or gas recovery. In the fracturing process of oil and gas layers, a fracturing vehicle is used to squeeze a high-pressure, large-displacement liquid with a certain viscosity into the oil layer. After many cracks are pressed out of the oil layer, proppant (such as quartz sand, etc.) is added to fill the cracks to improve oil and gas layer. Permeability to increase water injection (water injection wells) or oil production (oil wells). Fracturing technology plays an important role in the development of oil and natural gas, and the effectiveness of fracturing largely depends on the technical performance of fracturing proppa...