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

GEOS4 at Unconventionals Conference in Abu Dhabi

October 24, 2013

The conference "Unconventional Fossil Fuels: The Next Hydrocarbon Revolution?" will address, among others, implications of unconventional fuels for the oil-producing countries of the Arabian Gulf. This is timely, because when it comes to unconventional resource plays Middle East is a frontier exploration area. Governments are gearing up to unlock these... More

GEOS4 at the International Meeting on Organic Geochemistry (IMOG 2013)

September 11, 2013

GEOS4 co-founders Brian Horsfield and Rolando di Primio are actively involved in the IMOG 2013, with a presentation by Brian on "The evolving source and reservoir properties of the Posidonia unconventional resources play", and Rolando being a member of the Scientific Committee and chairing the session "Hydrocarbon Generation, Expulsion and Migration". More

GEOS4: new corporate design, more products and additional services

July 17, 2013

After eight years of successful work with clients worldwide, GEOS4 presents its new corporate design and relaunches its website.

ShaleGasFinder Posidonia Germany package released

July 17, 2013

A conventional source rock revisited: science-based data to explore for its unconventional potential. GEOS4 is pleased to announce the new ShaleGasFinder package for Posidonia Shale in Germany has now been released for purchase.

Gulf of Mexico PhaseFinder released

July 15, 2013

In collaboration with Worldwide Geochemistry Inc. we are offering a Gulf of Mexico PhaseFinder Package – compositional kinetics for Gulf of Mexico source rocks with PVT prediction capability.