What are the standards and processing of oil fracturing sand?

In silica sand processing and sand washing plant, Petroleum fracturing sand is a special proppant that must be used in oil production under specific geological conditions. Is this the case with technical standards and production technology?

Spherical oil fracturing sand

Spherical petroleum fracturing sand is made of natural quartzite, quartz sandstone or massive quartz. Its silica content is more than 96%, Mohs hardness is more than 65, gravel diameter is greater than 14 meshes and less than 80 meshes. The crude quartz sand is processed and put into an omnidirectional grinding machine. Under the condition of adding grinding agent, it is grinded for 2-8 hours before grinding. When the material is cleaned and dried so that its moisture content reaches 8-12%, it is then transferred to the drying, separation and iron removal process. Then the polishing machine is selected to add polishing agent for polishing, and the polished material is then processed and packed to produce qualified spherical quartz sand for oil production.

Technical index of fracturing sand

Quartz sand particle size: 16-80 mesh;

The content of clay soft minerals: <=1%;

Fragments content: <=2%;

Acid solubility: <=1.0%;

Sphericity: >= 0.6;

Roundness: P > = 0.6;

Approximate permeability: 45-46 darcy;

Approximate porosity: 32-35%.

Processing technology of spherical oil fracturing sand

The fracturing sand produced by the traditional production method has some problems, such as poor roundness and sphericity, low permeability and porosity.

Through a series of studies, Sinonine has created a new technology for producing petroleum fracturing sand. By processing natural quartzite and quartz sandstone into massive quartz and other raw materials, Sinonine has produced spherical quartz sand with good sphericity and roundness, high permeability and porosity. The production process has the advantages of low production cost, simple process and easy operation. The advantages of operation, reliable product quality and so on.

The production process of oil fracturing sand is as follows: crude quartz sand, grinding (2-3 hours) cleaning ,quartz sand drying ,screening ,iron removal ,quartz sand polishing (2 hours) ,screening , packaging, and finished products.

The crude quartz sand is made of natural quartz sandstone with 65 Mohr hardness and 96% SOa content. After processing, the particle size is about 30-50 days. Then the grinding machine is put into full-scale grinding for 2 hours, and the grinded material enters the cleaning and drying process. When the moisture content reaches about 10%, it is put into the drying kiln for drying. Dry quartz sand is removed by vibrating screen. After removing iron, quartz sand is polished by polishing machine. The polishing agent is about 1% of the polished quartz sand. Corundum powder and alum are used as polishing agent raw materials. The particle size of alum powder is about 100 mesh. Alum is heated before adding polishing agent, then crushed. When the particle size reaches 80 mesh, then refer to the polishing agent. Inside the polishing agent. After grinding and polishing, quartz sand and polishing agent are put into the polishing machine. After polishing for 2 hours, the machine can stop. Then, the polishing material is transferred to the screening process. The polishing agent is separated and removed for reuse. The quartz sand produced by the separation is packaged as the final product.

Suggestion: Oil fracturing sand can also be produced by desert sand and natural sand, and Sinonine can provide technical support in all aspects.