Latent Heat Fraction in Steam Drive Injection Formula
Latent Heat Fraction in Steam Drive Injection calculates fraction of injected heat in latent form for waterflooding and eor workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (C_w, T_i, T_a, f_sdh, L_hc) 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, f_hv equals 0.588785 fraction.
1
500
60
0.7
900
Inputs
C_w
BTU/lbm-FSpecific heat of water
T_i
degFSteam injection temperature
T_a
degFAmbient temperature
f_sdh
fractionDownhole steam quality
L_hc
BTU/lbmLatent heat of condensation
Outputs
f_hv
Fraction of injected heat in latent form
C_w
Specific heat of water
T_i
Steam injection temperature
T_a
Ambient temperature
f_sdh
Downhole steam quality
L_hc
Latent heat of condensation
Source and review
reviewedPrats, M. 1986. Thermal Recovery Monograph Vol. 7. Society of Petroleum Engineers, Page 77.
Source