Geochemical Services

Papua New Guinea, Mogulu Structure

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Geology:

  • SW edge of Papuan Foldbelt
  • Target: Cretaceous Toro Formation, early Mesozoic Sandstone ~3000m depth
  • Source is thought to be Jurassic
  • Area overlain by ~1200 m volcanics and a limestone aquifer ~ 1000-1500 m thick (Oligocene/Miocene Darai Limestone)
  • Target surface feature is a ~900 km2 magnetic anomaly
  • Poor quality seismic data due to the volcanics
  • Area is remote, dense jungle

(Stratigraphic Column Supplied by Oil Search Ltd.)

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Toro structure map with GORE® Survey sample locations indicated

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Regional Geologic Setting (Image supplied by Oil Search Ltd.)

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Survey Summary

  • ~900 km2 area
  • ~200 grid samples
  • Irregular grid pattern with samples spaced 1-2 km apart
  • Six model well sites
  • The survey area was in rugged terrain and thick jungle with limited access

Survey Results

  • Survey was able to detect hydrocarbon microseepage through thick aquifers and thick volcanic sequences
  • Mapped out fault blocks, showing that some fault blocks have more potential than others