Reservoir EngineeringWaterflooding and EOR
Chromatographic Lag in Polymer Flooding Formula
Chromatographic Lag in Polymer Flooding calculates chromatographic lag factor for waterflooding and eor workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (A_ads, rho_r, phi, C_poly, S_w) 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, CL equals 0.430108 dimensionless.
A_adsg polymer/g rock
0.0002
rho_rg/cc
2.65
phifraction
0.25
C_polyg/cc
0.002
S_wfraction
0.6
Inputs
A_ads
g polymer/g rockPolymer Adsorption
rho_r
g/ccRock Grain Density
phi
fractionPorosity
C_poly
g/ccPolymer Concentration
S_w
fractionWater Saturation
Outputs
CL
dimensionless
Chromatographic Lag Factor
A_ads
g polymer/g rock
Polymer Adsorption
rho_r
g/cc
Rock Grain Density
phi
fraction
Porosity
C_poly
g/cc
Polymer Concentration
S_w
fraction
Water Saturation
Source and review
reviewedPetroWiki. Polymer flooding adsorption and chromatographic lag relationship.
Source