Page 169 - Basic Well Log Analysis for Geologist
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LOG INTERPRETATION CASE STUDIES
8000. 0.0
CALI (1M) OPHI ( )
6000. 16. 0.3000 : 0.100
@R (@API) NP HI ( )
o 0.3000 LIMESTONE ~ ~ 29100
Figure 62. Combination Neutron-Density Log with gamma ray log and caliper, Mississippian Mission Canyon Formation,
Williston basin.
From a depth of 9,308 to 9,408 ft, note:
1. The high porosities on the neutron and density logs (tracks #2 and #3).
2. The neutron log reads higher porosity than the density log indicating the lithology ts dolomite (tracks #2 and #3).
