Ceramic proppant sphericity, high strength, corrosion resistance, strength

Fracking process Hydraulic fracturing technology is an effective technology fields to increase production. The process is to use high-pressure pump on the ground, the high viscosity of the fracturing fluid to significantly exceed the absorptive capacity of the formation of the displacement is injected into the well at the bottom Biechu high pressure; frac proppant when the pressure is greater than the near wellbore formation rock formation stress and tensile strength, at the bottom near the ground will crack; Fracturing proppants continue to inject liquid with sand proppant, fracture proppant filling extending forward and, after shut-filled fracture closure on the proppant, the last in the vicinity of the bottom cracks with a geometry and conductivity of a formation to facilitate a faster inflow of crude oil around the bottom of the well, to achieve the purpose of increasing production. As hydraulic fracturing proppant filling an important medium, which directly affects the capacity of the entire yield wells. Therefore, the study of high performance oil proppant for oil yield is very necessary. Oil fracturing proppant * Major points of natural quartz sand,

artificial ceramic proppant, resin-coated proppant (ie coated proppant) three categories, including coated proppant is divided into two coated sand and ceramic coating species. Natural quartz sand is not good for its sphericity, low intensity, but the lowest cost, it is generally in the large-scale use in shallow; artificial ceramic proppant due to its sphericity, high strength, corrosion resistance, good conductivity etc., as it has been widely used in the deep fracturing. Since the resin-coated sand after coating strength, density becomes small, can replace ceramic proppant oil in a medium-depth, but few studies coated ceramic proppant, the higher the cost, and could not be used Actual production

Artificial proppant and ceramic proppant compared

a)ceramic proppant supplier high artificial proppant relative particle density, such as: quartz sand is 2.60 g / cm3 ~ 2.70 g / cm3, but ceramic sand is of 2.80 g / cm3 ~ 3.60 g / cm3. Therefore, the performance of fracturing fluid (such as viscosity, rheology, etc.) and pumping conditions (such as displacement, power equipment, etc.) have put forward higher requirements. Ceramic proppant manufacturers

 b)Ceramic proppants the relative density of the particles depends on the material and the compressive strength of aluminum oxide content. With the increase of the content of aluminum oxide, ceramic of high density, compressive strength increases, so the two should get a balance. On the other hand, under the same conditions as the aluminum content of materials, processing technology (powder fineness, semi-intensity, sintering temperature) is the key to controlling the ceramic quality. Therefore, ceramic materials selection and manufacturing processes than other proppants demanding, much more complex.
 C) artificial ceramic proppant relative wear, high price.

Development proppant production

Fracture stimulation of oil and gas wells in low permeability oil and gas extraction yield important new technology. Proppant is the fracturing of key materials.

In recent years, as domestic oil fracturing proppant manufacturing Development, proppant fracturing of oil export volume gradually from scratch, from less to more. However, overall, the export volume is still less than imports. And products are mainly concentrated on low value-added low-end products, imports are high value-added high-end products, such as the excellent performance of high strength proppant fracturing of oil products. Development of oil fracturing proppant industry is not fast, the market size of the average annual growth rate of about 15 percent, the average annual growth rate of the enterprise total capacity of around 12%. Large number of enterprises, but most are small businesses, low yield, low-tech, competition means also focused on product prices above, and do not occupy a larger share of the market, especially large-scale enterprise production. Domestic oil demand continues to increase dependence on foreign oil continues to increase. In order to meet the increasing domestic demand for oil, the oil industry has developed rapidly. Correspondingly related products is rapidly expanding. China's oil fracturing proppant industry at this time, the relatively rapid development, the market scale growth rate reached 20%. In 2009, China oil fracturing proppant industry investment amount 470 million yuan in 2011 increased to 620 million yuan, an average annual growth rate of 13% the above.