GEOS is an open-source, multiphysics simulator developed cooperatively by Lawrence Livermore National Laboratory, Stanford University, TotalEnergies, and Chevron. Our goal is to open up new horizons in modeling carbon storage and other subsurface energy systems. This includes:

  • taking advantage of the ongoing revolution in high-performance computing hardware, which is enabling orders-of-magnitude gains in performance, but also forcing a fundamental rethink of our software designs;

  • enriching the physics used in industrial simulations, allowing complex fluid flow, thermal, and geomechanical effects to be handled in a seamless manner;

  • developing highly-scalable algorithms for solving these coupled systems;

  • and improving workflows for modeling faults, fractures, and complex geologic formations.

GEOS is released under an LGPL-v2.1 license. Please check out the links above to access our documentation, source code, and related information.

highlight image
Simulation of the fluid pressure distribution in a faulted reservoir due to CO2 injection. GEOS provides a framework for modeling complex flow and geomechanical processes on next generation computing architectures. Credit: Geologic data courtesy Gulf Coast Carbon Center.


Organization Contact
Lawrence Livermore National Laboratory Randy Settgast and Joshua White
Stanford University Hamdi Tchelepi
TotalEnergies Herve Gross
Chevron Xian-Huan Wen