Description:

EquivalentSkinFactor - Equivalent skin factor for vertical well with hydraulic fracture.

Excel Function Syntax:

EquivalentSkinFactor(Xf, W, K_fracture, K, Rw)

Online Calculator:

Parameter Value Description
Xf Fracture half-length, [ft]
W Fracture width, [ft]
K_fracture Fracture permeability, [mD]
K Reservoir permeability, [mD]
Result

All functions from WellFlow category

# Function Description
1 GasFlowRatePSS Gas well flow rate for pseudosteady state condition using Darcy flow approximation, [mscf/d]
2 GasFlowRatePSSNonDarcy Gas well stabilized flow rate for pseudosteady state condition, with Non-Darcy flow equation, [mscf/d]
3 TimeToPSSGas Time to stabilized flow in gas well, [h]
4 NonDarcyCoefficient Correlation for estimating non-Darcy coefficient, [d/mscf]
5 ProdIndexHorWellBorisov Horizontal well productivity index under steady state flow. Borisov method for well in an isotropic reservoir, [STB/(d.psi)]
6 ProdIndexHorWellGRJ Horizontal well productivity index under steady state flow. The Giger-Reiss-Jourdan method for well in an anisotropic reservoir, [STB/(d.psi)]
7 ProdIndexHorWellJoshi Horizontal well productivity index under steady state flow. The Joshi method for well in an anisotropic reservoir, [STB/(d.psi)]
8 ProdIndexHorWellRD Horizontal well productivity index under steady state flow. The Renard-Dupuy method for well in an anisotropic reservoir, [STB/(d.psi)]
9 ProdIndexHorWellBO Pseudosteady state productivity index for horizontal well, [STB/(d.psi)] The Babu Odeh method for a box-shaped , anisotropic reservoir, with a well placed parallel to X(box length)-direction.
10 ProdIndexHorWellBO2 ProdIndexHorWellBO2 - Pseudosteady state productivity index for horizontal well, [STB/(d.psi)] The Babu Odeh method for a box-shaped , anisotropic reservoir, with a well centrally placed parallel to X(box length)-direction.
12 DrainageAreaHorWell1 The horizontal well drainage area is represented by two half circles of radius b at each end and a rectangle, of dimensions L(2b), in the center. (Joshi Method 1), [acres]
13 DrainageAreaHorWell2 The horizontal well drainage area is an ellipse. (Joshi Method 2), [acres]