Seeps Mapping

Map onshore seepage using clear and defined processing and context-setting analysis to establish charge risk.

  • Identify direct and indirect spectral signatures of altered lithologies and stressed vegetation
  • Full structural mapping to understand conduits and migration pathways
  • Full stratigraphic mapping to establish mineralogy and alteration product suite
  • Clear and transparent workflows with no hidden or secret processing techniques

Mapping onshore seepage to establish the presence of an active and thus risk-reducing source rock is seen as highly desirable but is much harder to isolate than slicks occurring on water surface such as in the marine or lacustrine environments. The physics behind oil slick formation do not work in an onshore, terrestrial environment (although lake and even slack river seepage has been recorded) – as they don’t spread out on the surface, driven by surface tension. Most seeps are recorded as small oily films in river banks, often partially obscured or dribbling down vertical rock faces. They are often initially found by farmers and shepherds that know the terrain.

However, under certain circumstances, onshore seepage can be isolated as geochemical or geobotanical anomalies such as:

  • Clay mineral haloes/anomalies
  • Ferric: ferrous ratios
  • δC12/14 concentration ratios
  • Radiometric anomalies (U/Th)
  • Geobotanical, vegetation health/community anomalies
  • Soil gas anomalies
  • Geological context (topographic or structural highs)

The challenge is to find a technique that can isolate the known effects from background noise and anthropologic effects. We have been investigating these phenomena with industry partners and have demonstrated that a combination of spectral techniques such as band ratio, principal component analysis, multi-temporal hyperspectral sampling and geological context can explain some seepage scenarios.

GeoConsulting - Satellite Mapping

Satellite Mapping

A world-leading supplier of satellite images, multi-client products and bespoke mapping services.

GeoConsulting - Geological Mapping

Geological Mapping

Field to continent scale satellite-based geological mapping - from regional projects to detailed interpretation of license blocks.
GeoConsulting - Geological Mapping Studies

Geological Mapping Studies

Specializing in geological mapping and interpretation of remote sensing data, from regional projects to detailed interpretation of license blocks.

GeoConsulting - Geological Modelling

Geological Modeling

Balanced cross-sections derived through expert interpretation of satellite and seismic data. Rapid visualisation of exploration leads and prospects.
GeoConsulting - Seismic Support

Seismic Support

Increase efficiency and productivity for land seismic surveys with ground characterization and terrain mapping.
GeoConsulting - Terrain Characterization

Terrain Characterization

Near-surface ground characterization using remotely sensed data to support and enhance onshore seismic acquisition and processing.