Ocean Drilling Program - Acronyms Used for Schlumberger Logs

AZIM	Azimuth of Hole Drift (degrees)
ALUM	Aluminum (decimal fraction)
C1	Caliper 1 (in), from FMS
C2	Caliper 2 (in), from FMS
CALI	Caliper (in), normally from HLDT
CCA	Calcium Yield (decimal fraction)
CCHL	Chlorine Yield (decimal fraction)
CFE	Iron Yield (decimal fraction)
CGR	Computed (Th+U) Gamma Ray (API units)
CHY	Hydrogen Yield (decimal fraction)
CSI	Silicon Yield (decimal fraction)
CSIG	Capture Cross Section (capture units)
CSUL	Sulfur Yield (decimal fraction)
DEVI	Hole Deviation (degrees)
DIFF	Difference Between DTMN and DTMD in Transit Time Proc. 
(msec/ft)
DRHO	Bulk Density Correction (g/cm3)
DT	Short Spacing Transit Time (10'-8'; msec/ft
DTL	Long Spacing Transit Time (12'-10'; msec/ft)
DTLF	Long Spacing Transit Time (12'-10'; msec/ft)
DTLN	Short Spacing Transit Time (10'-8'; msec/ft
DTMD	Median Transit Time Recomputed (msec/ft)
DTMN	Mean Transit Time Recomputed (msec/ft)
DTN	Number of Transit Times Used in the Processing
FINC	Magnetic Field Inclination (degrees)
FNOR	Magnetic FieldTotal Moment (oersted)
FX	Magnetic Field on X Axis (oersted)
FY	Magnetic Field on Y Axis (oersted)
FZ	Magnetic Field on Z Axis (oersted)
GR	Natural Gamma Ray (API units)
HAZI	Hole azimuth (degrees)
HD	Hole Diameter (in)
IDPH	Phasor Deep Induction (ohmm)
IIR	Iron Indicator Ratio [CFE/(CCA+CSI)]
ILD	Deep Resistivity (ohmm)
ILM	Medium Resistivity (ohmm)
IMPH	Phasor Medium Induction (ohmm)
LIR	Lithology Indicator Ratio [CSI/(CCA+CSI)]
LLD	Laterolog Deep (ohmm)
LLS	Laterolog Shallow (ohmm)
LTT1	Transit Time (10'; msec/ft)
LTT2	Transit Time (8'; msec/ft)
LTT3	Transit Time (12'; msec/ft)
LTT4	Transit Time (10'; msec/ft)
NPHI	Neutron Porosity (%)
P1AZ	Pad 1 Azimuth (degrees)
PEF	Photoelectric Effect (barns/e-)
PIR 	Porosity Indicator Ratio [CHY/(CCA+CSI)]
POTA	Potassium (wet wt. %)
RB	Pad 1 Relative Bearing (degrees)
RHOB	Bulk Density (g/cm3)
SFLU	Spherically Focussed Log (ohmm)
SGR	Standard (total) Gamma Ray (API units)
SIR	Salinity Indicator Ratio (CCHL/CHY)
SP	Spontaneous Potential (mv)
THOR	Thorium (ppm)
TT1	Transit Time (10'; msec/ft)
TT2	Transit Time (8'; msec/ft)
TT3	Transit Time (12'; msec/ft)
TT4	Transit Time (10'; msec/ft)
URAN	Uranium (ppm)