Abstract: An ultra-lightweight, high strength ceramic proppant made from mixture of naturally occurring clays, preferably porcelain clay, kaolin and/or flint-clay, earthenware clay or other naturally occurring clays having an alumina content between about 5.5% and about 35%. The proppant has an apparent specific gravity from about 2.10 to about 2.55 g/cc, and a bulk density of from about 1.30 to about 1.50 g/cc. This ultra-lightweight proppant is useful in hydraulic fracturing of oil and gas wells, and has greater conductivity than sand at pressures up to 8,000 psi as measured by Stim-Lab after 50 hours and 275° F. on Ohio Sandstone, in the presence of deoxygenated aqueous 2% solution of KCI.

Abstract: An ultra-lightweight, high strength ceramic proppant made from mixture of naturally occurring clays, preferably porcelain clay, kaolin and/or flint-clay, earthenware clay or other naturally occurring clays having an alumina content between about 5.5% and about 35%. The proppant has an apparent specific gravity from about 2.10 to about 2.55 g/cc, and a bulk density of from about 1.30 to about 1.50 g/cc. This ultra-lightweight proppant is useful in hydraulic fracturing of oil and gas wells, and has greater conductivity than sand at pressures up to 8,000 psi as measured by Stim-Lab after 50 hours and 275° F. on Ohio Sandstone, in the presence of deoxygenated aqueous 2% solution of KCI.

Abstract: The present invention relates to a chemical industry, and more especially to a ceramic packing made of wollastonite, diopside, black tale and magnesite as main composition materials and employing clay as binder with high alkali-resistant and its manufacturing process. It can be used to produce variety size of rasching ring, saddle, super saddle, cross-partition ring and ceramic ball and so on advanced alkali-resistant ceramic packing. The main performance specification: water-absorption: <0.5%; bulk density: 2.35˜2.80 g/cm3; alkali-resistant: >99.5%; Mohs hardness: ?6.6; the present invention has following feathers: the raw material is coming from wide source, the manufacturing process is simple, the production cost is lower and so on, and the goods are chiefly used in inside of the alkaline medium reaction tower in chemical industry.