Page 93 - Basic Well Log Analysis for Geologist

DORE TT 1 LOGS

NEUTRON POROSITY EQUIVALENCE CURVES
SIDEWALL NEUTRON POROSITY LOG (SNP)
MAY ALSO BE USED FOR GNT NEUTRON LOGS
> oO
p
MATERIAL:

MATRIX 30

INDICATED

FOR (percent )

POROSITY 5

TRUE

© 1969 Schlu

0 10 20 30
SNP NEUTRON INDEX (Psyp)c (Apparent Limestone Porosity)
CORRECTED POROSITY (Psnp)c
DIAMETER DIAMETER

CALIPER MINUS HOLE~-SIZE (INCHES) 0 5 10 15 20 25 30 35 40

LOG DERIVED POROSITY ¢oyp(%)

78