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Personal profile

Research interests

I am the Director for the Institute of Petroleum Engineering (IPE) and the Energi Simulation (formerly known as Foundation CMG) Chair in Carbonate Reservoir Simulation. In the latter role, I head the Carbonate Reservoir Group at IPE and serve as the Co-Director of the International Centre for Carbonates (ICCR).

Together with the Carbonate Reservoir Group and colleagues at ICCR, I conduct fundamental and applied research that aims to improve our ability to characterise, model, and simulate hydrocarbon recovery from carbonate and fractured reservoirs. We also started to map our learnings to wider geoenergy challenges such as geothermal energy or CO2 storage.

Our research activities include, but are not limited to, pore-scale studies of multi-phase and multi-component transport, micro-X-Ray CT visualisation of flow processes, upscaling flow and transport in fractured reservoirs, near-wellbore flow processes, feedback between carbonate reservoir architectures and fluid flow, numerical method development, enhanced oil recovery (particularly water-alternating gas injection), heat transport, and history matching.


I joined the Institute of Petroleum Engineering (IPE) in 2006 as a lecturer. I was promoted to senior lecturer in 2009 and as full professor in 2010. In 2017 I became the Director of IPE. Before joining IPE, I was a postdoctoral researcher at ETH Zurich from 2004 to 2006.

I obtained my PhD degree in computational geosciences from the ETH Zurich in 2004 and hold an MSc degree in geosciences from Oregon State University. I was a visiting researcher at Aramco Services Company in Houston in 2015, at the Department of Earth Science and Engineering at Imperial College in 2006, and was a visiting fellow at the Department of Mathematics at Australia National University in 2001.

I am a member of the technical committe for the Oil and Gas Geoscience Division of the European Association of Geoscientists and Engineers (EAGE) as well as a founding member of EAGE's Reserves Committee. I am a member of the Society of Petroleum Engineers (SPE), for which I have chaired panel discussions (e.g. 2013 RSCS or 2014 ADIPEC) and serve on technical conference committees (e.g. 2016 ATCE, 2011 and 2013 RSCS, 2017 RSC).

In the past, I was an elected council member and chair of the awards committee for the Interpore Society, for which I received the Interpore Rosette for outstanding contributions to the society. I am also a regular member of the  American Geophysical Union (AGU), Geological Society of America (GSA) and the American Association of Petroleum Geologists (AAPG). I co-convened the 2012 joint AAPG-SPE-SEG Hedberg Research Conference on Fundamental Controls of Flow in Carbonates in France.

I have provided consultancy to the energy industry on some major technical issues, for example on the links between gas production and subsidence in the Wadden region, Netherlands. I also teach regularly CPD courses to the energy industry, for example at ENI Corporate University on applied reservoir simulation.

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  • 28 Similar Profiles
carbonate Earth & Environmental Sciences
simulation Earth & Environmental Sciences
permeability Earth & Environmental Sciences
modeling Earth & Environmental Sciences
wettability Earth & Environmental Sciences
dual porosity Earth & Environmental Sciences
upscaling Earth & Environmental Sciences
matrix Earth & Environmental Sciences

Co Author Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2002 2019

reservoir characterization

Analysing the limitations of the dual-porosity response during well-tests in naturally fractured reservoirs

Egya, D. O., Geiger, S., Corbett, P. W. M., March, R., Bisdom, K., Bertotti, G. & Bezerra, F. H., Feb 2019, In : Petroleum Geoscience. 25, 1, p. 30-49 20 p.

Research output: Contribution to journalArticle

Open Access
dual porosity
fracture network

Assessing The Uncertainty In Hydrocarbon Distributions In The Transition Zone Of A Giant Carbonate Reservoir

Albreiki, M., Geiger, S., Corbett, P. W. M. & AlAmeri, S., 18 Feb 2019.

Research output: Contribution to conferencePaper

transition zone

Comprehensive comparison of pore-scale models for multiphase flow in porous media

Zhao, B., MacMinn, C. W., Primkulov, B. K., Chen, Y., Valocchi, A. J., Zhao, J., Kang, Q., Bruning, K., McClure, J. E., Miller, C. T., Fakhari, A., Bolster, D., Hiller, T., Brinkmann, M., Cueto-Felgueroso, L., Cogswell, D. A., Verma, R., Prodanović, M., Maes, J., Geiger, S. & 8 others, Vassvik, M., Hansen, A., Segre, E., Holtzman, R., Yang, Z., Yuan, C., Chareyre, B. & Juanes, R., 9 Jul 2019, In : Proceedings of the National Academy of Sciences of the United States of America. 116, 28, p. 13799-13806 8 p.

Research output: Contribution to journalArticle


Evaluation and Optimisation of Chemically Enhanced Oil Recovery in Fractured Reservoirs Using Dual-Porosity Models

Al-Rudaini, A., Geiger, S., Mackay, E., Maier, C. & Pola, J., 2019, SPE Europec featured at 81st EAGE Conference and Exhibition. Society of Petroleum Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
dual porosity
enhanced oil recovery


Alfred Wegener Award

Sebastian Geiger (Recipient), 2017

Prize: Prize (including medals and awards)


Interpore Rosette

Sebastian Geiger (Recipient), 18 May 2015

Prize: Prize (including medals and awards)

Activities 2010 2017

Fractured Carbonate Reservoir Modelling and Simulation

Sebastian Geiger (Consultant)
27 Mar 201731 Mar 2017

Activity: ConsultancyDelivery of CPD

3rd EAGE Workshop on Naturally Fractured Reservoirs

Sebastian Geiger (Invited speaker)

Activity: Participating in or organising an eventParticipation in workshop, seminar, course

3rd EAGE Workshop on Naturally Fractured Reservoirs

Sebastian Geiger (Organiser)
1 Jan 2017 → …

Activity: Participating in or organising an eventParticipation in workshop, seminar, course

Panel Discussion: Academic Jobs in Oil and Gas

Sebastian Geiger (Speaker)
21 Feb 2017

Activity: Talk or presentationPublic lecture

Gordon Research Conference Flow and Transport in Permeable Media

Sebastian Geiger (Keynote/plenary speaker)
31 Jul 20165 Aug 2016

Activity: Participating in or organising an eventParticipation in conference