Page 173 - Formation Damage during Improved Oil Recovery Fundamentals and Applications

Formation Damage by Fines Migration: Mathematical and Laboratory Modeling, Field Cases 149

35
(A)
30
25
Impedance 20

15
10
5 Experimental data
Model
0
0 50 100 150 200 250 300 350 400
PVI
×10 –4
(B) 7 6
Accumulated outlet concentration 5 4 3

2
Experimental data
1
Model
0
0 50 100 150 200 250 300 350 400
PVI
Figure 3.25 Experimental data from coreflood of artificial sand-kaolinite core with
the fines migration model with delayed detachment, (A) core impedance, (B) accu-
mulated concentration of suspended particles at the outlet (PVI: number of pore
volumes injected).

Table 3.11 Tuned model parameters from the tuning of experimental data or
coreflood data presented in Fig. 3.25 for nonequilibrium delay in particle
detachment
Parameter Value
Drift delay factor, α 0.1061
Delay time, τ (s) 1126
Filtration coefficient, λ (1/m) 125.6
Formation damage coefficient, β 57,771
Total detached concentration, Δσ 0.00361
Coefficient of Determination, R 2 0.9649