Page 6 - Basic Well Log Analysis for Geologist

R. - resistivity of adjacent shale’
Re, - resistivity of Spherically Focused Log™
R, - resistivity of uninvaded zone
R, - resistivity of formation water”
R,, - apparent formation water resistivity
R,, - resistivity of flushed zone
Sr - hydrocarbon saturation (1.0 — S,,)
SN. - short normal log
SNP - sidewall neutron porosity
SP - spontaneous potential
SPI - secondary porosity index
SSP - static spontaneous potential SSP = -K log (R,/Ry)
Swier - irreducible water saturation
Swa - water saturation of uninvaded zone (Archie method)
Swe - Water saturation of uninvaded zone (Ratio Method)
Swi Syo - moveable hydrocarbon index
Syo - water saturation of flushed zone
T; - formation temperature
Voy - volume of shale

Loc NAMES USED IN TEXT

bulk density log microcaliper
caliper log Microlaterolog* (MILE)
Compensated Density Log Microlog* (ML)*
Combination Gamma Ray Neutron-Density Log Microspherically Focused Log* or (MSFL)*
Combination Neutron-Density Log neutron log
Compensated Neutron Log normal logs
density log nuclear logs
Dual Induction Log porosity log
Dual Induction Focused Log Proximity Log* or (PL)*
Dual Laterolog” resistivity logs
electrode logs Resistivity Spherically Focused Log® or (Rey)
gamma ray log short normal log
Induetion Electric Log Sidewall Neutron Log
induction log sonic log
Lateral Log Spectralog**
Laterolog* SphericaHy Focused Log* (SFL.)*
Latcrolog-8* spontaneous potential log (SP)