Method for producing high-strength oil fracturing proppant by using waste phosphate bricks

Abstract

The invention discloses a method for producing a high-strength oil fracturing propping agent by using phosphate waste bricks. The high-strength oil fracturing propping agent comprises the following components in percentage by weight: 40% of phosphate waste bricks, 50% of a bauxite ore raw material, 3% of Suzhou soil, 3% of manganese powder, 2% of dolomite and 2% of talcum powder; each phosphate crushed brick comprises the following chemical constituents in percentage by weight: 75-80% of P2O3, 5-7.2% of SiO2 and 1.1-2.3% of Fe2O3, wherein the burn loss is smaller than 2.5%; the bauxite ore raw material comprises the following chemical constituents in percentage by weight: 60-70% of Al2O3, 7.3-11.4% of SiO2, 1.5-2.5% of Fe2O3, smaller than 1.0% of MgO and smaller than 1.0% of CaO, wherein the burn loss is smaller than 12-14%. The high-strength oil fracturing propping agent produced by the invention can not only remarkably reduce the production cost of the propping agent, but also greatly improve the strength of the oil fracturing propping agent, and all performance indexes of the propping agent reach or exceed the national standard.

Description

Technical field: [0001] The invention relates to a method for producing high-strength oil fracturing proppant for medium-deep oil wells. Background technique: [0002] Oil fracturing proppant is the key to the success of oil fracturing process technology revival. Petroleum fracturing proppant is a support that keeps rock fractures deep in the formation open. During use, the proppant is mixed into the fracturing fluid, and injected into deep rock fractures by high-pressure means to support the rock formation, so as to increase the oil rate and increase the crude oil production. At present, the fracturing ceramsite sand used in China is generally low in strength and can only be used for shallow oil well development. If these proppants are used in medium-deep well oil production, it will be difficult to withstand the huge pressure of the rock formation and various corrosions in the formation environment, and will be broken in large quantities. The breakage rate of 20-40 mesh ...

AI Technical Summary

Problems solved by technology

If these proppants are used in medium-deep well oil production, it will be difficult to withstand the huge pressure of the rock formation and various corrosions in the formation environment, and will be broken in large quantities. The breakage rate of 20-40 mesh 69mpa is generally 4-8%, which is difficult to meet the requirements of medium-deep wells. oil well requirements

Sintered corundum products are often used in the world (such as the United States), but although this product can meet the requirements in terms of physical and chemical properties, the source of raw materials is difficult, the processing technology is complicated, and the energy consumption and cost are high.