Empirical correlations help design frac packs

Click here to enlarge imageEight empirical correlations, simple to use with a handheld calculator, were developed to help design frac pack.The correlations estimate fracture closure pressure, Young's modulus, leak-off coefficient, maximum bottomhole fracture treatment pressure, areal proppant concentration, fracture half-length, fracture toughness, and fracture conductivityA frac pack can significantly increase production from a hydrocarbon reservoir. It can be designed with commercially available computer software programs, but these usually require large amounts of field data that are not readily available and are, at best, difficult to find.The commercial software packages also r...

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