ASCOMP GmbH provides consulting services in the petroleum industry and related chemical and process engineering, with activities ranging from transport in pipes, oil oscillation in pores, to flow in porous media and three-phase flow separation
Liquid-liquid flows appear in the petroleum industry under various facets. Oil condensate and water are for instance produced and transported together. CMFD is playing a major optimization role in this area; at both the upstream and downstream levels, and also in the petrochemical segment.
TransAT allows predicting large-scale 2D and 3D petroleum flows featuring multi-components fluids (particles-gas-water-oil), both at the upstream (exploration) and downstream (transport and separation) levels. TransAT relies on its versatile interface tracking methods, VOF and Level Set, accounting for wetting mechanism.
ASCOMP GmbH software package TransAT (Transport phenomena Analysis Tool) can simulate a wide range of single and multi-fluid/component flows. TransAT is particularly designed to predicting fluid-fluid and fluid-solid multiphase flows (CMFD), featuring large density and viscosity ratios. TransAT has unique capabilities to treat wetting, phase separation (up to 3 components), and interfacial turbulence.
TransAT provides large-scale two-phase flow behaviour in specific components of a hydrocarbon exploration and transportation systems, as well as in the petrochemical area (examples shown below).
Slug flow in 3D pipes:
Slug flow is a commonly observed pattern in horizontal and near horizontal gas liquid flows. It is the regime with large coherent disturbances, causing large pressure fluctuations and variations in the flow rates that can affect process equipment. It is also characterized by intermittent appearance of aerated liquid masses that fill entirely the pipe cross-section and travel downstream at a large velocity.
Oil separation processors:
Gravity separators are used to separate oil, water, gas and sand. The three phase flow is very complex, featuring all sorts of flow-regime maps and characteristics: particle and sediment, drops, interfaces, phase change, flocculation, coalescence, fragmentation and also emulsions. The complexity of the physics requires specially dedicated CFD softwares like TransAT that is capable to tailor predictive methods to the physics. Three phase flow is now within reach of TransAT, including complex wetting and flocculation physics.
Flow through porous media:
The flow of oil, water and gas in the complex network of paths in petroleum reservoir rocks constitutes probably the most complex embodiment of interfacial interactions and their consequences on multiphase transport behaviour in porous media. The fact that each of the fluid phases comprises of multiple chemical components that seek to establish their own mass transfer equilibrium between phases adds another layer of complexity. These fundamental interactions still remain to be explored and better understood. TransAT has proven very useful in predicting this class flow, using IST/BMR technique.