| http://www.w3.org/ns/prov#value | - Depending upon the depth of the formation to be fractured (rock composition, bottom hole temperature, etc., etc) the frac fluid consists of water, a salt of some kind, usually NaCl but maybe calcium or ammonium chloride depending upon the formation, a gelling agent such as gaur gum, xanthum gum or others, sand or ceramic/glass beads to prop open the fracture and something to cause the gelling agen
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