Against this backdrop, a clear need was identified for more accurate multiphase transport simulation tools. The LEDA project was established to meet this challenge. APPROACH The approach in LedaFlow is to improve the accuracy and scale-up capability of the model by including more fundamental physics, rather than relying on more empiri- cal models. LedaFlow has shown excellent agreement with the SINTEF multiphase labo- ratory database, and considerably improved scaling performance against TOTAL and ConocoPhillips field data over other avail- able models. The LedaFlow development includes • Simulation of hydrocarbon multiphase flow in simple pipelines and complex geometries • Complex physics and chemical reactions (physio-chemistry) • Transient flow • Steady state and point models • 1D models for long pipes • 2D and 3D for critical pipe segments of or complex geometries (looking-glass) • 2-phase and 3-phase • Coupled 1D-2D-3D models • Network of pipes LedaFlow is a new transient multiphase flow simulator with improved models and numerics, with both 1D and multidimensional capability. BACKGROUND In 2002 ConocoPhillips, Total and SINTEF began a joint project to develop LedaFlow, the next-generation technology platform for multiphase flow. The development was based on the understanding that: • Production in an offshore environment is becoming more complex with each new project • Future major discoveries are expected to be in deepwater and arctic (hash and challenging) environments; • Small fields, IOR – increased oil recovery, extended life, tail production (water, sand and silt) often imply complex developments, complex operations and/or complex fluids • The focus on subsea-to-beach develop- ments, with ultra long tie-backs is increas- ing • Multiphase flow simulation has proven critical to technical and business success in the design of fluid transport systems. (e.g. Ormen Lange, Snøhvit, Mackenzie delta, Shtokman) LedaFlow : a step change in multiphase flow technology Time 2001 2010 1D EVOLUTION Technology advancement Pipeline Hydraulic Analysis Local Flow Assurance Pipeline Hydraulic Analysis Local Flow Assurance Multi- dimensional Pipeline Flow Simulator Multi- dimensional Pipeline Flow Simulator capability descriptions www.sintef.com Technology for a better society LedaFlow TM Next generation technology platform for multi-dimentional multiphase flow Updated April 2007