Hydraulic impedance may be used to determine fracture geometry, length and height. However, the models for analysis of impedance tests presented in literature usually ignore the effect of friction and fluid leak-off. This paper presents and solves an impedance testing model that considers the effects of friction and fracturing fluid leak-off. A test that has been presented in literature has been analyzed, and this paper will show from this analysis that ignoring these two factors may cause a significant error in estimating fracture parameters.

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