Gas Equations (Metric Units)

Typecurves - Dimensionless Variables

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Radial Analysis

Flow Capacity

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Permeability

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Total Skin

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Pressure Drop Due to Skin

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Flow Efficiency

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Damage Ratio

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Radius of Investigation

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Linear Analysis

Fracture Half-Length

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Channel Width

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Skin Due to Xf

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Horizontal Well Analysis

Vertical Permeability

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Effective Wellbore Length * (Permeability in the y-direction)0.5

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Horizontal Permeability

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Note: Horizontal well length is in the x-direction