Ceramsite oil fracturing proppant is reviewed

Oil fracturing proppant plant is keep deep strata rock fracture crack state support, its role is to support two wall cracks, to stop pump injection, in bottom hole pressure drop to less than closure pressure leads to the fracture of oil and gas Wells eye has remained open. Injection in oil and gas well fracturing proppant purpose is to improve the permeability of reservoir capacity, increase oil production. Since 1947, when the hydraulic fracturing technology was successfully in the United States has more than 60 years of development, proppant material also changed a lot. 50 ~ 60 s of the 20th century, aluminum ball, plastic ball, walnut shell, glass used as proppant material, but due to their own defects have been eliminated. The proppant used at present is mainly quartz sand and ceramsite. Current situation of the development of oil fracturing well fracking proppant as oil fracturing proppant, quartz sand has a relatively low density, is advantageous for the construction of pumping, the advantages of low price. However, there is also a strength is low, easy to broken, sphericity and low surface roughness, is not conducive to guide the oil permeability shortcomings. Therefore, quartz sand is only applicable to shallow Wells, low closure pressure the hydraulic fracturing of oil and gas layer. For the deep low permeable reservoirs, as a result of the buried depth of oil and gas layer is relatively great, formation closure pressure is high, the temperature is high, the main use of artificial ceramsite proppant.