We address all elements of petroleum systems through geochemical analysis and basin modelling. We specialise in pre-drill petroleum properties prediction.


Our expertise helps you to address the three main stages of unconventional petroleum exploration and production, from regional reconnaissance through reservoir profiling to development.

Kinetics Database

Use parameters you can rely on for modelling source rock behaviour in conventional petroleum systems and the generation behaviour of tight lithologies in unconventional resource plays.


Latest News

New research: generation, expulsion and fractionation in shales

August 18, 2016

Nick Mahlstedt, petroleum systems analyst at GEOS4, has published a paper in Energy and Fuels on how neutral nitrogen-containing compounds can be used to assess the roles of generation, expulsion and fractionation in shales.  More

Workshop: ONSET - a Multiclient Study of Polar Compounds in Petroleum Systems

July 31, 2016

GEOS4 hosted a workshop, 26-27 July in Potsdam, for the sponsors of ONSET, a multiclient project addressing the use of polar compounds as tracers in petroleum systems. More

Brian Horsfield: keynote address at EAGE Workshop on Petroleum Geochemistry

July 31, 2016

Brian Horsfield will deliver a keynote address at the EAGE Workshop on Petroleum Geochemistry in Operations and Production,which will be held in Doha, Qatar 3-5 October 2016. More

New Midland Basin Hydrocarbon Phase Study open for sponsorship

July 31, 2016

The new Midland Basin Hydrocarbon Phase Study is now open for sponsorship. This joint venture of GeoMark and GEOS4 focuses on predicting the GOR and PVT properties of dispersed petroleum in the Wolfcamp, Spraberry and Cline Formations.  More

Ph.D for GEOS4's Mareike Noah

July 31, 2016

GEOS4's Mareike Noah successfully completed her Ph.D defence at the Technical University of Berlin, 28 June. Her thesis is entitled ”Biogeochemical Process Studies on Oil Sand Tailings used for Land Reclamation in Alberta, Canada”, and utilises FT-ICR MS as a tool for examining polar compounds in highly altered oils. More