Table T4. Definitions of acronyms used to describe LWD and MWD tools.
|
Tool
|
Output
|
Definition
|
Unit
|
|---|---|---|---|
| CDR | Compensated dual resistivity | ||
| ATR | Attenuation resistivity (deep) |  m |
|
| PSR | Phase shift resistivity (shallow) | m |
|
| GR | Total gamma ray | gAPI | |
| SGR | Total spectral gamma ray | gAPI | |
| CGR | Corrected spectral gamma ray (K+Th) | gAPI | |
| THOR | Thorium (Th) | ppm | |
| URAN | Uranium (U) | ppm | |
| POTA | Potassium (K) | % |