Quartz sand has the following characteristics

Natural quartz sand is used in the first and widespread natural gas fracturing ( about 55% ) , the main chemical composition is silicon oxide (SiO2), while with a small amount of aluminum, iron, calcium, magnesium, potassium and sodium compounds, and a small amount of impurities . Quartz content is an important indicator of the quality of quartz sand , quartz content of quartz sand fracturing is generally about 80% ; quartz content of foreign high-quality quartz sand up to 98% .
Quartz sand has the following characteristics:
( 1 ) sphericity of the quartz sand is preferably broken, still maintain a certain conductivity .
( 2 ) a relatively low density of the quartz sand , to facilitate pumping .
(3) 0.154mm ( ie 100 mesh ) or fine sand can be used as a natural crack down fracturing fluid filtration agent , filling cracks in oil fracturing proppant with the master .
Lower ( 4 ) the intensity of quartz sand and began crushing pressure of approximately 20MPa, fragmentation will greatly reduce permeability, but also by embedding, fines migration , congestion, fracturing fluid and non- Darcy flow effects of injury , fracture conductivity can be reduced to below 10% of the initial value , and therefore suitable for low pressure reservoir is closed .
( 5 ) the price is cheap, you can make the best in many areas . Origin of fracturing with quartz sand wide , such as Lanzhou sand, sand , Fuzhou , Fujian , Hunan Yueyang sand.