Table T8. Wireline tool strings used and properties measured.

Tool strings*
Typical
logging
speed
(m/hr)
Individual
tools*
Properties
measured
Sample
interval
(cm)
Approximate
vertical
resolution
(cm)
Approximate
depth of
investigation
(cm)
Triple combination (total length ~32 m) 250-275 HNGS Natural gamma ray 15 45 Variable


APS Porosity 5 and 15 30 15


HLDS Bulk density, PEF 15 38 15


DITE-SFL Resistivity 15 150/90/60 150/76/38


TAP Temperature 1/s NA NA



Tool acceleration 4/s




Pressure 1/s

FMS-sonic (total length ~30 m) 250-275 NGT Natural gamma ray 15 45 45


GPIT Tool orientation 1 or 15



DSI Sonic velocity 15 110 15-30


FMS Resistivity image 0.25 0.5 15
GHMT (total length ~9 m) 300-400 NGT Natural gamma ray 15 45 25


SUMS Susceptibility 5 and 15 35


NMRS Total field 5 and 15 45 NA

Notes: * = see Table T9 for explanations of acronyms used to describe tool strings and individual tool names. NA = not applicable.