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Table T13. Measurements made by wireline tool strings.

Tool string Tool Measurement Sampling
Triple combination HNGS Spectral gamma ray 15 51

APS Porosity 5 and 15 43
HLDS Bulk density 2.5 and 15 46
DLL Resistivity 15 61
TAP Temperature 1 per s NA
  Tool acceleration 4 per s NA
  Pressure 1 per s NA
Formation MicroScanner (FMS)-sonic combination FMS Microresistivity 0.25 0.5
GPIT Tool orientation 0.25 and 15 NA

SGT Total gamma ray 15 NA
DSI Acoustic velocity 15 107
Ultrasonic Borehole Imager UBI Ultrasonic imaging Variable 0.5–2

GPIT Tool orientation 0.25 and 15 NA
SGT Total gamma ray 15  
WST-3 WST-3 Sonic traveltime NA NA
Goettingen Borehole Magnetometer GBM Magnetic field 5 NA
  Tool orientation    

Notes: All tool and tool string names (except the TAP and GBM) are trademarks of Schlumberger. For the complete list of acronyms used in IODP and for additional information about tool physics and use consult IODP-USIO Science Services, LDEO, at​TOOLS_LABS/​tools.html. See Table T14 for explanation of acronyms used to describe tool string and tools. NA = not applicable.

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