Average Reservoir Temperature in Cyclic Steam Injection Formula
Average Reservoir Temperature in Cyclic Steam Injection calculates average temperature within the heated zone for waterflooding and eor workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (T_i, T_s, f_VD, f_HD, f_pD) 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_a equals 422.4 K.
320
520
0.85
0.8
0.1
Inputs
T_i
KInitial Reservoir Temperature
T_s
KSteam Temperature
f_VD
dimensionlessDimensionless Heat Loss Normal to Heated Interval
f_HD
dimensionlessDimensionless Heat Loss in Heated-Interval Direction
f_pD
dimensionlessDimensionless Heat Loss by Produced Fluid
Outputs
T_a
Average Temperature within the Heated Zone
F_T
Net Heated-Zone Temperature Factor
T_s
Steam Temperature
T_i
Initial Reservoir Temperature
Source and review
reviewedThermal Recovery, Prats, M. (1986)
Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, Chapter 9, Page 115.
Source