Why choose us ?

We leverage cutting-edge technologies and innovative approaches to solve complex challenges.

Access to advanced laboratories allows us to deliver precise and reliable geosciences analytical services.

Our solutions promote efficiency and sustainabilty, ensuring the success of our clients.

We work with various clients worldwide, in a wide range of scientific fields and industries, providing them with high added-value technical analyses and expertise. 

Our services

H-ES Environment

Our Environmental services focus on Marine Environmental Modelling. Using advanced 3D simulations, we assess the environmental impact of all offshore discharges, including:

  • Oil Spills
  • Produced Water
  • Drilling Discharge
  • Cooling Water
  • Particulate Discharge
  • Chemicals

The work of our environmental team has been fundamental for many of our clients, with our studies being essential during pre-operations, routine checks, and accidental spills.

H-ES Geoscience

At HES Geoscience, we specialise in comprehensive geochemistry and diagenesis analysis of core and subsurface reservoirs. Utilising cutting-edge laboratory technology and expert knowledge, we offer a range of analytical services, including:

  • Fluid Inclusion Analysis
  • Carbonate Stable 
Isotope Analysis
  • Carbonate U/Pb Dating
  • High-Resolution 
Rock Imaging
  • Clumped Isotope 
Geochemistry

Our geoscience team’s work is fundamental for our clients, providing essential insights during exploration and development phases.

The team

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Thomas Bideau

Thomas Bideau

Co-founder and Chairman

Thomas holds a degree in geology from IGAL and a Masters in Business Administration from the University of Paris I Panthéon Sorbonne. With over 20 years’ professional experience, he has worked for major groups such as Total, ERAMET and Imerys. In 2017 he founded H-Expertise Services S.A.S., which specialises in fluid inclusion analysis and environmental modelling. A keen beekeeper, he spends part of his spare time keeping bees, which is his way of helping to preserve the environment.

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Vanessa Dyja-Person

Vanessa Dyja-Person (PhD)

Geologist – Fluid inclusion expert

Vanessa, who holds a PhD in geology from the University of Lorraine, is an experienced geologist with 14 years’ experience in fluid inclusion analysis. She worked in the mining industry for 4 years and in the oil and gas sector for 10 years. Passionate about geology, Vanessa set up H-Expertise Service in 2017. With her combination of academic knowledge, industrial experience and passion for earth sciences, Vanessa is a valuable resource in the field of fluid inclusion analysis and geochemistry.

In her spare time, Vanessa balances her passions for science and relaxation. She loves reading, ranging from classic literature to the latest best-selling contemporary novels.

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Benjamin Livas

Benjamin Livas

Environmental Modelling Expert

After obtaining a Master’s degree in aquatic ecosystem dynamics, Benjamin began working in the coastal environment field in a CNRS laboratory in Dinard, France. This work led him to bring his expertise to the oil and gas industry, working as a marine and coastal environment engineer on various projects. A keen surfer, Benjamin finds a perfect balance between his love of the sea and his work, often spending his weekends riding the waves off the French coast. With 11 years’ experience, he now specialises in the modelling of any discharge into the marine environment (oil spills, produced water, drilling cuttings, etc.) and the associated response, mainly using the MEMW© software, of which he is a certified user by the developers, SINTEF, located in Norway.

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Xavier Mangenot

Xavier Mangenot (PhD)

Geologist – Geochemistry expert

Xavier, who holds a doctorate in in Geochemistry from IFPEN (Institut Français du Pétrole), is a geochemist with research and development experience in the field of isotope geochemistry, particularly in the analysis of carbonates, methane and hydrogen.

He also has experience in radiogenic mineral dating.

In 2022, Xavier joined H-Expertise Service, bringing his specific knowledge and further strengthening the analytical capacity in the field of isotope geochemistry and its applications.

Outside of his professional activities, Xavier Mangenot balances his passions for archaeology and the renovation of historic buildings.

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Lauren Derby

Lauren Derby

Environmental Modelling Engineer

Lauren holds a Master’s degree in Physical Geography from the University of Newcastle in England, and initially worked as a teaching assistant at the same university. She then joined the World Meteorological Organization (WMO), the UN’s leading authority on weather, climate and water. During this time, she contributed to the history of global climate observing systems, the analysis of key climate variables, and the study of glaciers and sea ice, focusing on cryospheric hazards.

A keen sportswoman, Lauren devotes her spare time to a variety of sporting activities, balancing her demanding job with her love of exercise. In 2023, Lauren joined H-ES to strengthen the Environmental Services department, bringing her expertise in Geographic Information Systems (GIS) and Python programming.