Curve corrections

Preprocessing and environmental corrections turn raw logs into physics-ready curves: chart-based corrections, depth alignment, baseline correction and project-wide cleaning.

Environmental corrections

Tool / curve	Correction
BKZ	Symmetrisation of laterolog curves
Neutron-gamma (NGK)	Hydrogen index / porosity, automatic
Neutron-neutron (NNK)	Porosity, manual and automatic modes
Induction	Conversion of conductivity to resistivity

Manual editing tools

• Curve splicing and cutting of curve intervals.
• Baseline correction for drifting curves.
• Depth shifting (log tying) — manual and iterative.
• Log-view normalisation and editing of values by zone.
• LQC set creation — building ordered quality-control datasets.
• Chart (cross-plot / palette) methods for porosity and other parameters.

Conditioning

• Curve smoothing and trend creation.
• Differential normalisation between curves.
• Iterative depth shift for multi-run alignment.

This page summarises the Preprocessing and Environmental-correction sections of the Wellbore.AI / Gamma technical manual.

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