Seep Explorer

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Reduce Uncertainty in Oil Exploration with the Industry's Leading Global Onshore and Offshore Seepage Database.

Seep Explorer

Seep Explorer has recently been launched following the combination of the following datasets:

Global Offshore Seepage Database

The main component of Seep Explorer is NPA's Global Offshore Seeps Database (GOSD) which provides:

  • The world’s leading offshore oil seepage database
  • A valuable first indication of source presence
  • A proven effectiveness in both established and frontier basins
  • A low cost and non-invasive satellite imagery based database

NPA’s offshore seepage detection technique utilizes satellite radar images to detect naturally occurring oil seepage in a variety of offshore settings, including untested offshore frontier basins. This technique led to the development of GOSD, which has rapidly become the industry standard with support from the majority of the world’s oil companies.

GOSD contains over 25000 individual SAR scenes that cover 90% of the world’s offshore sedimentary basins. The main components of GOSD provide:

  • Multiple coverage
  • Full weather screening 
  • Global consistency
  • New high resolution satellite data 
  • Standardized GIS deliverables 
  • Robertson GeoVerse Portal 

The primary application of GOSD is for new ventures exploration; however it also has a major role to play in offshore pollution monitoring and environmental benchmarking.

Fluid Features Database

The Fluid Features Database (FFD) was designed to provide an additional dataset for offshore assessment of slicks recorded in the GOSD. FFD is rapidly expanding with over ~20,000 attributed data points covering all features with a potential relationship to seepage.

Robertson Geochemistry (seeps only)

The Robertson Geochemistry database provides an extensive geochemical database from oils, rocks and seep sites with a consistent tool for displaying and understanding the geochemical data. The seep site layer from Robertson Geochemistry has been incorporated into Seep Explorer.


The Global Onshore Gas-Oil Seeps data set (GLOGOS) was a recent acquisition by CGG from Gas Consult. GLOGOS provides an additional 2000 onshore seeps from 87 countries, based on direct research (published data) and an extensive literature and internet web survey. Seeps are classified in gas seeps, oil seeps, mud volcanoes and springs.

Seep Explorer provides the world's most extensive on- and offshore seepage database, containing:

  • 200,000 slicks of a possible seepage origin
  • 30000 attributed reference points 
  • Geochemistry information for various onshore locations

Licence-round studies

We can provide quotes for client specified areas on a case-by-case basis as well as the full studies listed below

Morocco Seepage Study, 2016  Download (PDF)
Republic of Congo Seepage Study, 2016  Download (PDF)
Mozambique Seepage Study, 2015  Download (PDF)
Gabon Seepage Study, 2015  Download (PDF)
Equatorial Guinea Seepage Study, 2015  Download (PDF)
China Seepage Study, 2016  Download (PDF)
Myanmar Seepage Study, 2015  Download (PDF)
North West Shelf Seepage Study, 2016  Download (PDF)
New Zealand Seepage Study 2016  Download (PDF)
Australia Seepage Study, 2015  Download (PDF)
Cyprus Seepage Study, 2016  Download (PDF)
Croatia Seepage Study, 2016  Download (PDF)
Norway 24th License Round Seepage Study 2017  Download (PDF)
Baffin Bay, Greenland Seepage Study, 2017  Download (PDF)

None at present.

Central U.S. Gulf of Mexico Seepage Study, 2017  Download (PDF)
Newfoundland Seepage Study, 2016  Download (PDF)
Western U.S. Gulf of Mexico Seepage Study, 2016  Download (PDF)
Mexican Gulf of Mexico Seepage Study, 2016  Download (PDF)
Barbados Seepage Study, 2015  Download (PDF)
Suriname Seepage Study, 2015  Download (PDF)
Brazil Seepage Study, 2015  Download (PDF)
Trinidad and Tobago Seepage Study, 2015  Download (PDF)
GeoConsulting - Satellite Mapping

Satellite Mapping

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

GeoConsulting - Geochemistry


Our Geochemistry services range from routine source rock and maturity analyses through to oil, condensate and gas characterisation and migration modelling.

GeoConsulting - (update) Robertson Geochemistry

Robertson Geochemistry

Providing geochemists and petroleum geologists with a comprehensive and consistent tool for displaying and understanding geochemical data.
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