Crossflow index

Input(s)

$N_{p c f}$: Oil Recovery from Layered System with Crossflow (STB)

$N_{p n c f}$: Oil Recovery from Stratified System with No Crossflow (STB)

$N_{p u}$: Oil Recovery from Uniform System with Average Permeability (STB)

Output(s)

CI: Crossflow Index (dimensionless)

Formula(s)

$$ C I=\frac{N_{p c f}-N_{p n c f}}{N_{p u}-N_{p n c f}} $$

Reference(s)

Willhite, G.P. 1986. Waterflooding, Vol. 3. Richardson, Texas: Textbook Series, SPE, Chapter: 2, Page: 166.