RILD
SchlumbergerS/mDeep Induction Conductivity (Raw)
The raw deep-induction conductivity before calibration to CILD — the unprocessed conductivity signal from the deep induction array. Conductivity is the reciprocal of resistivity, so high values mean conductive, often water-bearing, rock.
- Property
- Deep Induction Conductivity
- Deep Conductivity
- Quantity
- electric conductivity
- S/m · mS/m · mS/cm · kS/m
- Typical range
- ~1.4–58.5 Ohm-m
- mmho/m (mS/m), conductivity
Logging tool
No logging tool is associated with this curve.
Service company
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How it's measured
The deep induction array's raw measured conductivity (eddy-current response), prior to the skin-effect and calibration corrections that produce CILD and the resistivity ILD.
How it's used
An intermediate and QC channel behind the deep resistivity. When present it lets petrophysicists trace how the delivered ILD/CILD was derived, or re-process from raw.
Common gotchas
It is a raw, uncalibrated channel — not the curve to interpret directly for saturation. Use the calibrated conductivity (CILD) or resistivity (ILD) instead; RILD is for QC and re-processing.
In LAS files
Recorded as RILD in conductivity units, alongside CILD and ILD. Treat it as raw input, not a deliverable.
Also seen with RILD in real logs
Curves that appear alongside RILD in the same wells across the public corpus.