Accurately tracking and predicting the subsurface migration of specific materials over time, and over multiple phases, is critical to efficient and effective strategy development and deployment in a growing number of applications. STOMP (short for Subsurface Transport Over Multiple Phases) is a software tool that provides multidimensional modeling of subsurface flow and reactive transport phenomena. It was originally designed to support environmental remediation of subsurfaces contaminated with volatile organic compounds and/or radioactive material.  

Scientists and engineers from various disciplines have used STOMP in their subsurface analyses, exploiting its ability to save time and reduce costs by efficiently providing critical information. For example, the simulator’s use is now expanding into the energy field, where scientists are applying it to better understand the performance and environmental impact of geologic sequestration of carbon dioxide and in-situ production of oil shales, among other potential applications. Further, STOMP is one of the few numerical simulators in the world capable of investigating the production of natural gas hydrates from geologic formations.

STOMP’s modeling capabilities address a variety of subsurface environments including nonisothermal conditions, fractured media, multiple-phase systems, nonwetting fluid entrapment, soil freezing conditions, nonaqueous phase liquids, first-order chemical reactions, radioactive decay, solute transport, dense brines, nonequilibrium dissolution, and surfactant-enhanced dissolution and mobilization of organics.