Table T6. Acronyms and units used for logging-while-drilling and measurement-while-drilling tools.
Tool
Output
Tool name/Explanation of output
Unit
ADN
Azimuthal Density Neutron tool

TNPH Thermal neutron porosity %

RHOB Bulk density g/cm3

ROMT Maximum density total from rotational processing g/cm3

DROR Correction for rotational density g/cm3

DCAL Differential caliper in
NMR
Nuclear Magnetic Resonance

MRP Magnetic resonance porosity %
RAB
Resistivity-at-the-Bit tool

BDAV Deep resistivity average m

BMAV Medium resistivity average m

BSAV Shallow resistivity average m

RING Ring resistivity m

RBIT Bit resistivity m


Spatially oriented resistivity images of borehole wall m
MWD
Measurement-While-Drilling tool

DWOB Downhole weight on bit klbf

DTOR Downhole torque at bit kft·lbf

* Bit bounce klbf

* Tool stick slip

Note: * = no acronym.