Turbulent Acidizing Mass Transfer Flux - Coefficient Form Formula
Turbulent Acidizing Mass Transfer Flux - Coefficient Form calculates average diffusion flux of component a in y direction for hydraulic fracturing workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (K_g, c_avg, c_wall_avg, V_N_avg) are known and the assumptions behind the cited hydraulic fracturing 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, U_ay equals 0.0014 mol/cm2/s.
0.02
0.1
0.08
0.01
Inputs
K_g
cm/sEffective Mass Transfer Coefficient
c_avg
mol/cm3Average Concentration of Flowing Acid
c_wall_avg
mol/cm3Average Acid Concentration at the Wall
V_N_avg
cm/sAverage Fluid Velocity Normal to the Surface
Outputs
U_ay
Average Diffusion Flux of Component A in Y Direction
K_g
Effective Mass Transfer Coefficient
c_wall_avg
Average Acid Concentration at the Wall
V_N_avg
Average Fluid Velocity Normal to the Surface
Source and review
reviewedWilliams, B.B., Gidley, J.L. and Schechter, R.S. 1979. Acidizing Fundamentals. Henry L. Doherty Memorial Fund of AIME, Society of Petroleum Engineers of AIME, Page 23.
Source