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.

Excel Function Syntax

ProdIndexHorWellBO2(sizeX, sizeY, sizeZ, Kx, Ky, Kz, L, Rw, Bl, Ul, S)

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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 Formation volume factor, [bbl/STB].
Ul Liquid viscosity, [cP]
S Skin factor, [dimensionless]