Who Are we ?
Our Mission
g4Geo is an R&D geophysical private company. It is the continuity of Geophimage company created in 2017, which is expert in geophysical subsurface imaging using gravity method, coupled with different results of other methods; e.g. magnetotelluric, seismic, magnetic, etc.
Our main objective is to help mitigate the risks associated with exploring geo-energy projects and mitigating the risks of any subsurface project using multidisciplinary approaches.
We provide a large range and different approaches for gravity data analysis using advanced state-of-the-art software. Dealing with the gravity method since 2005, we offer our expertise to help you to success in your projects
We provide accurate data processing – 2D, 3D and 4D gravity modeling using finite element meshing – lake and ocean/sea water effect – stripping – post processing and gravity deep analysis by several other operators. We perform also constrained and unconstrained 2D and 3D data inversion.
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Our software’s are advanced compared to the standard software, because we reduce drastically the applied approximations, especially in the data processing and modelling.
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We offer our gravity services based on our long and varied experience including our state-of-the-art software.
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Long and varied Experiences
We are dealing with a gravity data since 2005. We achieved successfully several projects: academic and industrial. We worked with gravity data coming from different countries, for instance: Switzerland, France, Deutschland, Italy, Chili, Bolivia and Kenya.
We developed several software’s helping us to achieve any gravity data manipulation, modelling, inversion, post-processing, stripping, Pseudo-tomography, Multi-angles horizontal derivatives, etc.
Our Core Values
Our experience for the benefit of your projects
- More than 17 years dealing with gravity, seismic/OVSP, magnetotelluric (MT)
- High theory and practical skils
- Several publications in journals with high impacts; Geophysics, Geophysical Journal International, Geothermics, Tectonophysics, Geothermal Energy Journal, Journal of African Earth Sciences
- Multi-disciplinary studies; for instance coupled gravity with seismic and Magnetotelluric results, as well as borehole data.
- Software's at the state-of-the-art
Two words concerning Yassine Abdelfettah
Dr Yassine Abdelfettah, founder and CEO of g4geo, has more than 14 years of experience in geophysics applied to geothermal projects and more than 17 years working with gravity, seismic/OVSP and MT methods. Experienced in geophysical data acquisition, data processing, numerical modelling and inversion, home software development, data interpretation for the gravity, seismic and electromagnetic methods. He is experienced in combing seismic and non-seismic data for both academic and industrial projects. He got his petroleum engineer in 2003 and his PhD thesis in 2009. In 2017, he created his own geophysical company expert mainly in gravity, but also on magnetotelluric.
He worked, among other places, at the UBO University of Western Brittany, at the Centre for Hydrogeology and Geothermics CHYN, University of Neuchâtel, Switzerland, at KIT, Karlsruhe Institute for Technology, Germany and at the Institute of Globe Physics of Strasbourg, EOST/IPGS, France.
Main professional experiences
- Since 02/2023 Principal Owner at g4geo Geophysical Company, Strasbourg – France.
- 04/2019 – 03/2023 Geophysicist at Geophysical Inversion and Modelling Labs (GIM-labs), Cergy – France.
- 2018 EM and ERT QC-Field Operator with CGG, Ugunda & Tanzania
- 5/2017 – 10/2017 Geophysicist Researcher at the Institute of Globe Physics of Strasbourg (EOST/IPGS), Strasbourg – France.
- 5/2014 – 4/2017 Geophysicist Researcher at i) Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute for Technology (KIT), Karlsruhe – Germany (50%) and ii) Institute of Globe Physics of Strasbourg (EOST), Strasbourg – France (50%).
- 7/1012 – 4/2014 Senior research fellow in Geophysics at the Hydrogeological and Geothermal Centre CHYN working at geothermal laboratory (CHYN), University of Neuchâtel, Switzerland.
- 7/2009 – 6/2012 Post – doctoral at the Hydrogeological and Geothermal Centre (CHYN) worked with Geothermal group, University of Neuchâtel, Switzerland.
