At H-Expertise Services Geosciences (H-ES), we specialise in delivering top-tier geoscience analytical services tailored to the needs of the energy sectors. Our comprehensive suite of services, combined with our commitment to innovation and excellence, ensures that we provide our clients with precise, actionable insights that drive success.
Our core analysis services are designed to enhance subsurface reservoir characterisation and provide valuable insights for geoscience system analyses. By studying core samples, we offer detailed assessments of reservoir geological history and various properties, such as porosity, permeability, and the PVTX evolution of geofluids (Pressure, Volume, Temperature, and Composition). These analyses are critical for understanding the depositional environment, diagenetic history, and fluid flow characteristics of the reservoir.
Leverage advanced geochemical core analysis to unlock resource potential

Expertise
Our team of highly skilled scientists brings unmatched knowledge and experience to every project.

Innovation
We employ cutting-edge technologies and innovative methods to solve the most complex geoscience challenges.

Sate-of-the-Art Laboratories
We utilize advanced laboratories to deliver precise and reliable geoscience analytical
Our analytical services
Fluid inclusions analyses
Unlock the secrets of your reservoir with our fluid inclusions analyses. By studying fluid pockets trapped within minerals, we provide detailed insights into the history of fluid flow and thermal evolution, essential for optimising reservoir management.
Carbonate in-situ U-Pb dating
Ensure precise dating of carbonate minerals with our state-of-the-art Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) services. Ideal for determining the timing of diagenetic events, hydrocarbon migration, and geological histories, our U-Pb dating is a cornerstone for reservoir characterisation.
Clumped isotope Geochemistry
Gain accurate historical temperature reconstructions with our clumped isotope geochemistry services. This advanced technique analyzes the abundance of isotopically “clumped” molecules in carbonates, offering critical data for understanding diagenetic processes.
C/O Isotope Analyses on Carbonate
Benefit from our precise carbon and oxygen isotope analyses on carbonate. These analyses provide critical insights into paleoenvironmental conditions and diagenetic histories, essential for a complete understanding of your carbonate systems.
Petrographic and elemental mapping
Gain precise petrographic and geochemical insights with our advanced imaging and elemental analysis services. We utilize high-resolution thinsection imaging, cathodoluminescence, and LAICPMS to map major and trace elements, supporting comprehensive sample characterization
Zircon U-Pb dating – sediment sourcing
Obtain precise geological timelines with our zircon U-Pb dating services. Using LA-ICPMS, we determine sandstone provenance, sediment transport pathways, and igneous rock crystallization ages, providing critical insights into sedimentary processes and geological history reconstruction.
Coming soon …
Vitrinite reflectrance analyses
Achieve accurate thermal maturity assessments with our vitrinite reflectance measurement services. This technique provides key insights into organic matter evolution, hydrocarbon potential, and basin thermal history, supporting reliable petroleum system evaluations.
Coming soon …
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Staff publication
The Geoscience experts
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.
Xavier Mangenot (PhD)
Geologist – Geochemistry Consultant
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.
