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The Interpretation group provides tools for linking geological interpretation products — picked horizons and well markers — to seismic data within the g-Platform processing workflow. These modules allow geophysicists and interpreters to import, display, and extract interpretation objects alongside processed seismic gathers or stacked volumes, enabling fast visual QC and the production of horizon-based attribute maps without leaving the processing environment.

A typical use case is to import a horizon picked in an external interpretation package, overlay it on a processed post-stack section to confirm structural alignment, and then extract a horizon-following amplitude or RMS map for reservoir characterisation. The modules in this group cover each step of that workflow.

Modules in this group

Import posstack horizon — reads a set of horizon picks from an external ASCII file and converts them into the g-Platform internal point-set format. This is the starting point for any horizon-based analysis: load the picks here so they can be passed to the Extract Horizon or Horizon slice extractor modules downstream in the workflow.

Extract Horizon — takes one or more imported horizon point sets and projects them onto every trace of a connected seismic gather using fast Kriging spatial interpolation. The result is displayed as a horizon overlay on the seismic section in the viewer. Use this module to verify that horizons align correctly with the visible reflectors on a stack section or CMP gather, and to export the interpolated trace-by-trace horizon time series for downstream use.

Horizon slice extractor — extracts seismic amplitude or RMS energy from a 3D post-stack volume along a picked horizon surface, producing a two-dimensional horizon slice map. For each bin in the survey grid the module interpolates the horizon time from the supplied picks, then samples the seismic data within a configurable time window centred on that horizon. Optional spatial and temporal averaging windows allow the map to be smoothed, and an optional fold matrix can be used to scale or mask the extracted values. Use this module for bright-spot analysis, reservoir delineation, and any attribute study that requires following a geological surface through the data.

Import Well Data (deprecated) — reads well marker picks from a plain-text file and overlays them on a seismic gather view as spatial control points. Each pick is matched to the nearest seismic trace bin within a user-defined search radius, allowing well-to-seismic tie validation directly in the processing flow. This module is retained for backward compatibility; new workflows should use the Well data exchange or Well Data Show modules available in the Geometry group instead.