Description:

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.

Excel Function Syntax:

ProdIndexHorWellBO(sizeX, sizeY, sizeZ, Kx, Ky, Kz, L, Rw, Bl, Ul, S, x1, y0, z0)

Online Calculator:

Parameter Value Description
sizeX Length size of the reservoir drainage box. X-direction, parallel to the well, [ft]
sizeY Width size of the reservoir drainage box. Y-direction, perpendicular to the well, [ft]
sizeZ Reservoir height. Z-direction, [ft]
Kx Horizontal permeability in X-direction, [mD]
Ky Horizontal permeability in Y-direction, [mD]
Kz Vertical permeability, [mD]
L Length of the horizontal part of the well, [ft]
Rw Wellbore radius, [ft]
Bl Liquid formation volume factor, [bbl/STB].
Ul Liquid viscosity, [cP]
S Skin factor, [dimensionless]
x1 X location of the heel of the well. For the centrally placed well is equal to 0.5*(boxLength-wellLength), [ft]
y0 Y location of the heel of the well. For the centrally placed well is equal to 0.5*boxWidth, [ft]
z0 Z location of the heel of the well. For the centrally placed well is equal to 0.5*reservoirHeight, [ft]
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 DrainageRadius Effective drainage radius, [ft]
6 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]
7 DrainageAreaHorWell2 The horizontal well drainage area is an ellipse. (Joshi Method 2), [acres]
8 EffectiveWellboreRadius Effective wellbore radius, [ft]
9 EquivalentSkinFactor Equivalent skin factor for vertical well with hydraulic fracture.
10 FlowRateTFVogel Vogel inflow performance for transient-state flow, [STB/d]
11 FlowRateTF Transient-state production flow rate, [STB/d]
12 ProdIndexTF Transient state productivity index for vertical well, [STB/(d.psi)]
13 FlowRatePSSVogel Vogel inflow performance for pseudosteady state flow, [STB/d]
14 FlowRatePSS Pseudosteady state production flow rate, [STB/d]
15 TimeToPSS Time to pseudosteady state for regular shape drainage area, [h]
16 ProdIndexPSS Pseudosteady state productivity index for vertical well, [STB/(d.psi)]
17 FlowRateSSVogel Vogel inflow performance for Steady state flow, [STB/d]
18 FlowRateSS Steady state production flow rate, [STB/d]
19 ProdIndexSS Steady state productivity index for vertical well, [STB/(d.psi)]
20 ProdIndexHorWellBorisov Horizontal well productivity index under steady state flow. Borisov method for well in an isotropic reservoir, [STB/(d.psi)]
21 ProdIndexHorWellGRJ Horizontal well productivity index under steady state flow. The Giger-Reiss-Jourdan method for well in an anisotropic reservoir, [STB/(d.psi)]
22 ProdIndexHorWellJoshi Horizontal well productivity index under steady state flow. The Joshi method for well in an anisotropic reservoir, [STB/(d.psi)]
23 ProdIndexHorWellRD Horizontal well productivity index under steady state flow. The Renard-Dupuy method for well in an anisotropic reservoir, [STB/(d.psi)]
24 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.
25 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.