Type Curve Matching
Match well test pressure data to Gringarten type curves (PD vs tD/CD) to determine permeability, skin factor, and wellbore storage coefficient. Browser-based type curve analysis.
Well & Reservoir Parameters
Test Data (Δt vs ΔP)
Enter elapsed time (hr) and pressure change (psi). Pre-filled with synthetic buildup data.
| # | Δt (hr) | ΔP (psi) |
|---|
Match Point Selection
Select a match point by choosing the type curve parameter (CDe2S) and entering the corresponding real and dimensionless coordinates.
k = 141.2 × q × B × μ × (PD / ΔP)match / h
C = 0.000295 × k × h × (Δt / (tD/CD))match / (μ)
CD = 0.8936 × C / (φ × ct × h × rw²)
S = 0.5 × ln(CDe2S / CD)
Permeability, k
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Skin Factor, S
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Wellbore Storage, C
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CD
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Log-Log Type Curve Match
How this was calculated
Gringarten Type Curves: PD vs tD/CD for a well with wellbore storage and skin. Each curve corresponds to a CDe^(2S) value. Overlay measured data, select a match point, and compute k, C, CD, and S from the coordinates.
Type curve generation: PD approximated using line-source + wellbore storage: unit slope (PD=tD/CD) at early time, log behavior at late time. Transition governed by CDe^(2S).
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Book a free strategy call →Gringarten Type Curve Matching
Type curve matching is a graphical well test analysis technique where measured pressure data is overlaid on pre-computed dimensionless solutions. The Gringarten et al. (1979) type curves plot PD vs tD/CD with CDe^(2S) as a parameter, simultaneously determining permeability, skin, and wellbore storage from a single log-log match. Commercial packages implement these with pressure derivative overlays. All calculations run in your browser. Built by Groundwork Analytics.