PO.IPR.HW.SS.PI.ByEconomides.Centered.SI
Description
Calculates steady state productivity index for horizontal well using Economides model for centered well (Zw = h/2), [m3/(d.kPa)]. Economides et al. (1994) correlation (SI units).
Formula
=LAMBDA(L, Rw, Xe, Ye, h, Kx, Ky, Kz, Bl, Ul, LET(
L_ft, PO.UnitConverter(L, "m", "ft"),
Rw_ft, PO.UnitConverter(Rw, "m", "ft"),
Xe_ft, PO.UnitConverter(Xe, "m", "ft"),
Ye_ft, PO.UnitConverter(Ye, "m", "ft"),
h_ft, PO.UnitConverter(h, "m", "ft"),
result_STBdpsi, PO.IPR.HW.SS.PI.ByEconomides.Centered(L_ft, Rw_ft, Xe_ft, Ye_ft, h_ft, Kx, Ky, Kz, Bl, Ul),
result_STBdpsi * PO.UnitConverter(1, "bbl/d", "m3/d") / PO.UnitConverter(1, "psi", "kPa")))Parameters
| Parameter | Unit | Description |
|---|---|---|
L |
m | Length of horizontal section, [m] |
Rw |
m | Wellbore radius, [m] |
Xe |
m | Drainage extent in x-direction (along well), [m] |
Ye |
m | Drainage extent in y-direction (perpendicular), [m] |
h |
m | Reservoir thickness, [m] |
Kx |
- | Permeability in x-direction, [mD] |
Ky |
- | Permeability in y-direction, [mD] |
Kz |
- | Permeability in z-direction (vertical), [mD] |
Bl |
- | Liquid formation volume factor, [m3/sm3] |
Ul |
- | Liquid viscosity, [cP] |
Examples
| Invocation | Expected |
|---|---|
=PO.IPR.HW.SS.PI.ByEconomides.Centered.SI(304.8, 0.0762, 609.6, 304.8, 30.48, 50, 50, 5, 1.2, 2) |
0.10665338 |