General information

Reference

2025-3817  

Position description

Category

F10 Geophysics - Engineer / Researcher

Job title

PhD Thesis in experimental geophysics

Contract

Thesis

Contractual hours

Full-time

Contract duration

36 months

Context and contributions of the position

To limit the impact of climate change on the environment, effective mitigation measures such as large-scale carbon dioxide (CO2) capture and geological storage, geothermal energy, and energy carriers (e.g., H2) must be combined with a major expansion of renewable energies.

Clay formations act as stratigraphic barriers (“cap rocks”) on energy reservoirs due to their low permeability and play a key role in achieving carbon-free energy goals.

They must be accurately characterized in terms of their condition and containment properties.

An effective study of clay geological formations must use non-intrusive and integrative geophysical exploration techniques that complement direct and local hydrogeochemical measurements.

Electrical and electromagnetic methods can provide valuable insights into the containment properties of clay barriers, which are complex environments due to their sensitivity to textural properties and mineralogy.

This thesis is part of the scientific program of the ANR PRCI BARRIERS project

Job description

Joining the Bureau de Recherches Géologiques et Minières (BRGM) means becoming part of the leading public institution in Earth sciences, bringing together 1,000 experts and enthusiasts across 29 entities located in mainland France and overseas.

BRGM's work focuses on geological knowledge and understanding of phenomena related to the ground and subsoil, with one key objective: to respond to the challenges of environmental change through innovative projects that address societal issues.

You will be responsible for developing a unique device in the laboratory for broadband electrical and electromagnetic measurement (mHz - MHz) and ultra-fine geochemical characterization using X-rays (µCT, SAXS, WAXS) in order to better understand the electrical signal of clays during hydration and diffusion processes.

You will also lead the interpretation of results and explore potential links between the geochemical and mineralogical properties of clay materials and their electrical characterization, testing and adapting various modeling approaches developed in the literature as well as new approaches developed within the BARRIERS project.

This work will enable the development of broadband geophysical instrumentation and improve the interpretation and use of electrical and electromagnetic geophysical methods in order to closely monitor the containment properties of engineered clay barriers for underground storage.

Profile

Desired start date : October 6, 2025
Contract type : PhD student
Duration : 36 months
Formation required : Master with at least one year of study in a developed country
Experience : Entry level

You have a five-year degree (Master's 2 research, engineering, or equivalent) with training in geophysics, physical or chemical measurements and an interest in geosciences.
You are highly rigorous and have a strong interest in laboratory experimentation.
A good knowledge of geophysical modeling, soil physics, and geochemical and mineralogical processes would be appreciated.
Computer skills are essential.
You will need the following skills and qualities:
- Organizational skills, autonomy, and initiative;
- Ability to identify scientific issues and obstacles; ability to propose solutions to these obstacles;
- Ability to communicate and engage in dialogue with different types of people;
- Ability to synthesize information;
- Fluency in English and French (written and spoken); very good writing skills in French and English.

Working conditions

This full-time position involves regular travels between Orléans and Poitiers, as well as occasional travel abroad to visit German partners in the BARRIERS project or to present PhD thesis work at international conferences.
BRGM offers a supportive work environment that promotes work-life balance, particularly through teleworking, and is known for its friendly and welcoming atmosphere.
Awarded the HRS4R label in 2021, our aim is to support you throughout your professional life at BRGM. We offer a range of schemes to help you develop your skills and expertise, with opportunities for career development and geographical mobility.
At BRGM, you will enjoy a number of benefits such as 13 months' salary, JRTT days off, a company restaurant, sports facilities, vacation and leisure benefits, and more.

BRGM guarantees a transparent recruitment process. To apply, send us your application (updated CV, motivation letter, grades from your university years -especially master, previous supervisors contact information and recommendations) by July 7, 2025 at the latest.

Please note that all our positions are open to everyone. At BRGM, we are committed to diversity!

We will review your application as soon as the application period closes. If your application is successful, we will contact you for recruitment interviews during which you will meet with the recruiting department, the HR department, and a cross-functional department.

Position location

Job location

France, Centre-Val de Loire, Loiret (45)

Location