Page 156 - Petrophysics 2E

PERMEABILITY-POROSITY RELATIONSHIPS 129

TABLE 3.4
PERMEABILITY AND POROSITY
k (mD) $ (fraction) k (mD) $ (fraction)
~~~ ~
22 0.08 112 0.09
51 0.1 430 0.19
315 0.12 250 0.16
344 0.13 490 0.14
90 0.11

SOLUTION

The calculation of the different parameters is only presented for sample
#l. All other values are given in Table 3.5.

(a) Calculate RQI using Equation 3.43, i.e.:
::

RQI = 0.0314 - = 0.0314 - -
E-0.52

The ratio & is calculated from Equation 3.46:

0 0.08
” = - = 0.087
- 1 - 0.08

TABLE 3.5
EXAMPLE RESULTS
k (mD) 4 RQI (pm) $/(1 - 4) F ‘I: (m=2) FFI (“YO)

22 0.08 0.521 0.087 126.56 12.5 7.60
51 0.1 0.709 0.111 81.00 10.0 9.50
315 0.12 1.609 0.136 56.25 8.3 11.40
344 0.13 1.615 0.149 47.92 7.70 12.35
90 0.11 0.898 0.124 66.94 9.10 10.45
112 0.09 1.108 0.099 100.00 11.11 8.55
430 0.18 1.535 0.220 25.00 5.5 17.10
250 0.16 1.241 0.190 31.64 6.2 15.20
490 0.14 1.858 0.163 41.33 7.1 13.30