Page 277 - The Geological Interpretation of Well Logs

APPENDIX

Logging Tool Mnemonics (only some!)

(*) Western Atlas mnemonics are only given where they are different from Schlumberger mnemonics
or the tool is different.

TYPE SCHLUMBERGER WESTERN ATLAS (*)

RESISTIVITY DIL Dual Induction Log DIFL Dual Induction Focused Log
LOGGING DLL Dual Laterolog
SFL Spherically Focused Log
ISF Induction Spherically Focused
IES Induction Electrical Survey [EL Induction Electrolog
DIT-E —_ Phasor Induction DPIL Dual Phasor Induction
AIT Array Induction Log Imager
ARI Azimutha] Resistivity Imager
TBRT Thin Bed Resistivity Tool

MICRO ML Microlog ML Minilog
RESISTIVITY MLL Microlaterolog
LOGGING PML Proximity Log PROX Proximity Log
MSFL_ Micro Sperically Focused Log
EPT Electromagnetic Propagation
Time Log

ELECTRICAL SP Self Potential (not company specific)

SONIC BHC Borehole Compensated Sonic AC Acoustilog Borehole Compensated
LOGGING LSS Long Spaced Sonic ACL Acoustilog Long Spaced
ASL Astay Sonic DAC Digital Array Acoustilog
DSI Dipole Sonic Imager MAC Multipole Acoustic Tool

NUCLEAR GR Gamma Ray
NGS Natural Gamma Ray SL Spectralog
=(NGT) Spectroscopy (tool)
FDC Formation Density Compensated CDL Compensated Densilog
LDL Litho-Density Log ZDL Compensated Z-Densilog
(LDT) (tool)
CNL Compensated Neutron Log CN Compensated Neutron
SNP Sidewall Neutron Porosity N-EN Sidewall Epithermal Neutron

MAGNETIC NMR Nuclear Magnetic Resonance (not company specific)
MRIL = Magnetic Resonance Imaging Log (Numar name for NMR)

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