|
Tool
|
Output
|
Explanation
|
Unit
|
|
DIT
|
|
Dual Induction Tool
|
|
|
|
IDPH
|
Deep induction resistivity
|
Ωm
|
|
|
IMPH
|
Medium induction resistivity
|
Ωm
|
|
|
SFLU
|
Spherically focused resistivity
|
Ωm
|
|
FMS
|
|
Formation MicroScanner
|
|
|
|
C1, C2
|
Orthogonal hole diameters
|
Inch
|
|
|
P1AZ
|
Pad 1 azimuth
|
Degrees
|
|
|
|
Spatially oriented resistivity images of borehole wall
|
|
|
GPIT
|
|
General Purpose Inclinometry Tool
|
|
|
|
DEVI
|
Hole deviation
|
Degrees
|
|
|
HAZI
|
Hole azimuth
|
Degrees
|
|
|
Fx, Fy, Fz
|
Earth's magnetic field (three orthogonal components)
|
Degrees
|
|
|
Ax, Ay, Az
|
Acceleration (three orthogonal components)
|
m/s2
|
|
HLDS
|
|
Hostile Environment Litho-Density Sonde
|
|
|
|
RHOM
|
Bulk density
|
g/cm3
|
|
|
PEFL
|
Photoelectric effect
|
barn/e–
|
|
|
LCAL
|
Caliper (measure of borehole diameter)
|
Inch
|
|
|
DRH
|
Bulk density correction
|
g/cm3
|
|
HNGS
|
|
Hostile Environment Gamma Ray Sonde
|
|
|
|
HSGR
|
Standard (total) gamma ray
|
gAPI
|
|
|
HCGR
|
Computed gamma ray (HSGR minus uranium contribution)
|
gAPI
|
|
|
HFK
|
Potassium
|
wt%
|
|
|
HTHO
|
Thorium
|
ppm
|
|
|
HURA
|
Uranium
|
ppm
|
For the complete list of acronyms used in IODP and for additional information about tool physics, consult IODP-USIO Science Services, LDEO, at iodp.ldeo.columbia.edu/TOOLS_LABS/tools.html.