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Half of the total length of the hydraulically induced vertical plane fracture.
For the fractured vertical well the geometrical skin-factor
is related to
Fracture half-length as:
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S_G= -\ln \left(\frac{X_f}{r_w} \right) + \frac{1.65 -0.328 \, u + 0.116 \, u^2}{1+0.18 \, u + 0.064 \, u^2 +0.05 \, u^3} |
where
In case of high dimensionless hydraulic fracture conductivity (corresponding to infinite conductivity fracture case) the skin-factor model can be simplifiedIn simple case:
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| anchor | Xfsimple |
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| alignment | left |
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S_G = -\ln \left(\frac{X_f}{2\, r_w} \right) |
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