Hot-Water Flood Real Time from Dimensionless Time Formula
Hot-Water Flood Real Time from Dimensionless Time calculates real time for waterflooding and eor workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (h, M_r, t_D, alpha_s, M_s) are known and the assumptions behind the cited waterflooding and eor relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, t equals 510.416667 day.
50
35
0.5
1.2
25
Inputs
h
ftLayer thickness
M_r
BTU/ft^3-FVolumetric heat capacity of reservoir
t_D
dimensionlessDimensionless time
alpha_s
ft^2/daySteam or thermal diffusivity
M_s
BTU/ft^3-FVolumetric heat capacity of steam zone
Outputs
t
Real time
h
Layer thickness
M_r
Volumetric heat capacity of reservoir
t_D
Dimensionless time
alpha_s
Steam or thermal diffusivity
M_s
Volumetric heat capacity of steam zone
Source and review
reviewedPrats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, Chapter 6, Page 61.
Source