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Reservoir EngineeringWell PerformanceCalculation record

Pseudo-Steady State Horizontal Well Productivity Method 3 Calculator

Jh=khh70.6μo(F+h0.5Lkhkvsx)J_h=\frac{k_hh}{70.6\mu_o\left(F+\frac{h}{0.5L}\sqrt{\frac{k_h}{k_v}}s_x\right)}

Enter the declared reservoir engineering inputs below to solve J_h. Variable definitions, units, the default calculation, and the available source trail are included on this page.

Tabular solver

Inputs

Defaults provide a quick field-unit example for the equation.

7 variables

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Extended guidance in preparation

What is available in this record

This record provides the functioning calculator, formula, declared variables and units, a reproducible default result, and the available citation metadata. A separately written engineering interpretation has not yet been published for this calculation.

Formula reference

Formula, variables, and default calculation

Jh=khh70.6μo(F+h0.5Lkhkvsx)J_h=\frac{k_hh}{70.6\mu_o\left(F+\frac{h}{0.5L}\sqrt{\frac{k_h}{k_v}}s_x\right)}

Reproducible default result

With the default values shown below, the calculation returns J_h = 13.45161 STB/day/psi. Defaults demonstrate the implementation; they are not recommended field values.

k_hmD

100

k_vmD

10

hft

50

mu_ocP

2

Fdimensionless

2

Lft

1000

s_xdimensionless

2

Input definitions

k_h

mD

Horizontal Permeability

k_v

mD

Vertical Permeability

h

ft

Reservoir Thickness

mu_o

cP

Oil Viscosity

F

dimensionless

Shape and Drainage Geometry Factor

L

ft

Fracture Length

s_x

dimensionless

Pseudo-Skin Factor

Output definitions

J_h

STB/day/psi

Pseudo-Steady State Horizontal Well Productivity Index

F

dimensionless

Shape and Drainage Geometry Factor

s_x

dimensionless

Pseudo-Skin Factor

mu_o

cP

Oil Viscosity

L

ft

Fracture Length

Source and record status

Source metadata identifies the relationship implemented by the calculator. Check the cited edition, unit basis, and scope against the engineering case before operational use.

reviewed

Joshi, S.D. 1991. Horizontal Well Technology. Tulsa, Oklahoma: PennWell Publishing Company.

Open source reference