Page 242 - Reservoir Formation Damage

222 Reservoir Formation Damage

BEavg
G/Gavg
Linear (E/Eavg)
Linear (G/Gavg)

0 5 10 15 20 25

Length, L (mm)

Figure 10-17. Correlation of the Cernansky and Siroky (1985) data for
variation of the E and G parameters by the length of porous media for
material POP 1. = 0.179andG avg = 5.66.

quality, as indicated by the coefficients of regressions R 2 = 0.78 and
R 2 = 0.18, respectively.
The mean diameter of particles is 20.2jam and the estimated dimension
of pores 50jom. The porosity is (j> 0 =0.31. The concentration of the
3
3
injected suspension is c in =0.lkg/m 3 or <5 in = (0.1&g/ra )/(2,825£g/m )
3
5
= 3.54xlO- m /m
To determine the deposition and entrainment rate constants, in Eq. 10-91
- 0 was substituted and the derivative with respect to time was
i' cr
evaluated numerically using the central and backward finite difference
approximations given below, respectively, for the interior and the final
points (see Chapter 16 for derivation):

(10-174)
dt 2Af,

(10-175)