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Heliometric data mapped "as we go" straightaway enlarging our knowledge about the resources 


E&P companies have been experiencing a sharp fall in oil and gas production in offshore shallow waters over the last decade in spite of the fact that seismic surveys have dramatically improved the industry’s ability to locate oil and natural gas offshore.

For more than 10 years, Actual Geology has developed a comprehensive acquisition portfolio exploiting advanced shallow water Heliometric technology for enhanced hydrocarbon reservoir identification and delineation, whilst delivering the most sophisticated data in the exploration industry today without an environmental effect.

The large amount of research (with more than 10,000 analysed water measurements) that has been completed by our team during the past years has done much to clarify the understanding of Heliometric data in the shallow waters and provided our team with unique experience in interpreting offshore Heliometric data.

The main targets of the modern offshore helium surveys in shallow waters include mapping the presence and distribution of helium gas seepage indications in order to identify areas with a high potential for petroleum reservoirs and to reduce the areas to be searched by helping to focus exploration efforts on highly promising areas with respect to hydrocarbons.

Our expertise in multiple shallow water environments provides our team members with the tools, training and unique methodology designed to meet a wide range of surveying and safety requirements.

Heliometric data is acquired by Areal 3D helium surveys over selected prospects. Our own fully automated lab on-board systems with improved sensitivity and the appropriate survey design is tuned to address multiple geological objectives in water depths from 30 to 300 meters. Seabed water samples are delivered to the on-board lab by sample bottles.  

With Heliometric data the shallow water prospects become more than just guesses or estimates since we improved understanding of the prospect’s geologic properties, optimize and de-risk well-placement and mitigate prospect uncertainty.

Field Surveys

Methods applied

  • Heliometric data acquisition

  • Additional Geochemical Studies

Field Systems

  • Heliometric data - Onboard Automated Heologic System SEA MASTER

  • Water sampling and packing set for Chromatographic laboratory gas testing

Grid size

  • 2D Profiled Heliometric Survey: 150m - 500m

  • 3D Areal Heliometric Survey: 150m - 300m

  • Additional Geochemical Studies: by client's design



  • Transportation: Support, Supply or Research vessels

  • Crew: 11 pax


Speed of work

  • Approx. 4-6 stations per hour

Factors to take into consideration

  • Season

  • Weather conditions

  • Current

  • Water depth

  • Wild life

  • Offshore Structures

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