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Table T6. Acronyms and units used for downhole wireline tools and measurements, Expedition 339.

Tool
Output
Description
Unit
APS   Accelerator Porosity Sonde  
  APLC Near array limestone porosity corrected %
  STOF Computed standoff inch
  SIGF Formation capture cross section Capture units
DIT   Dual Induction Tool  
  IDPH Deep induction resistivity Ωm
  IMPH Medium induction resistivity Ωm
  SFLU Spherically focused resistivity Ωm
DSI   Dipole Sonic Imager  
  DTCO Compressional wave slowness (Δt) µs/ft
  DTSM Shear wave slowness (Δt) µs/ft
FMS   Formation MicroScanner  
  C1, C2 Orthogonal hole diameters inch
  P1AZ Pad 1 azimuth °
  Spatially oriented resistivity images of borehole wall
GPIT   General Purpose Inclinometer Tool  
  DEVI Hole deviation °
  HAZI Hole azimuth °
  Fx, Fy, Fz Earth’s magnetic field (three orthogonal components) °
  Ax, Ay, Az Acceleration (three orthogonal components) m/s2
HLDS   Hostile Environment Litho-Density Sonde  
  RHOM Bulk density g/cm3
  PEFL Photoelectric effect b/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
HRLA   High-Resolution Laterolog Array tool  
  RLA1–5 Apparent resistivity from computed focusing modes 1–5 µm
  RT True resistivity µm
  MRES Borehole fluid resistivity µm
EDTC   Enhanced Digital Telemetry Cartridge  
  GR_EDTC Total gamma ray gAPI
  Ax, Ay, Az Acceleration (three orthogonal components) m/s2
VSI   Versatile Seismic Imager  
    Acoustic traveltime ms

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.

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