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Against this backdrop, a clear need was identified for more accurate multiphase transport simulation tools. The LEDA project was established to meet this challenge.
APPROACHThe 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.
BACKGROUNDIn 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
Time2001 2010
1D EVOLUTION
Tech
nolo
gy
adva
ncem
ent
Pipeline Hydraulic Analysis
Local Flow Assurance
Pipeline Hydraulic Analysis
Local Flow Assurance Multi-
dimensional Pipeline Flow Simulator
Multi-dimensional Pipeline Flow Simulator
capabilitydescriptions
www.sintef.comTechnology for a better society
LedaFlowTM
Next generation technology platform for multi-dimentional multiphase flow
UpdatedApril2007
OBJECTIVEThe purpose of the LEDA development is to provide the oil and gas industry with a new multi-dimensional software technology platform, facing up to the coming challenges in oil and gas exploration and production.
LedaFlow will extend multiphase pipeline simula-tion to multiple dimensions, enabling the first-principles simulation and visualisation of waves, slugs, droplets and bubbles. When completed, the LedaFlow software suite will be a fully integrated, multi-dimensional, multiphase flow assurance tool, capable of modelling hydrate and paraffin depo-sition, and corrosion and solids transport. It will represent a step change in multiphase flow tech-nology.
WORLD-CLASS LABThe LEDA development is founded on world class laboratory facilities. SINTEF operates the largest multiphase flow laboratory in the world. More than 10,000 tests have been performed to establish refer-ence data for multiphase flow simulators.
Prediction of velocity profiles and droplet distributions:
Experimental shape of bubble nose and slug front
Predicted shape of plug
LedaFlow Q3D model predicts flow regime, slug developement and local flow
SINTEF Petroleum ResearchVisiting address: S.P. Andersens vei 15BPostal address: NO-7465 Trondheim, Norway Phone: +47 73 59 11 00E-mail: [email protected]
SINTEF Materials and ChemistryVisiting address: R. Birkelands vei 2BPostal address: NO-7465 Trondheim, Norway Phone: +47 4000 3730E-mail: [email protected]
Contact persons:Øyvind Hellan, phone: +47 41211815, e-mail: [email protected] Arne Jacobsen, phone: +47 73591058, e-mail: [email protected] Tore Johansen, phone: +47 92605241, e-mail: [email protected]
