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Fluid Mechanics in Offshore Oil & Gas
   Esbjerg University, Denmark - MAP
   Wednesday April 10 2013 - 12:00-16:00

Registration w. complimentary sandwich and soda


N.N. DANSIS Organizing Committee

Fluid Dynamics Modeling for Offshore Oil and Gas Applications

Dr. Simon Gant, Principal Scientist, Fluid Dynamics Team, Health and Safety Laboratory (HSL), UK Presentation in PDF

This presentation will provide an overview of the fluid dynamics modeling activities at HSL for offshore oil and gas applications. Topics covered will include:

1. Smoke infiltration into temporary refuges on offshore platforms
2. Gas dispersion
3. Flammability of hydrocarbon and carbon dioxide gas mixtures
4. Generation of flammable mists
5. Gas detector networks on offshore platforms
6. Reviews of fire and explosion models

13:20 Gas dispersion in congested process areas using OpenFOAM
Presentation in PDF
Chris M. Dixon, Shell Global Solutions (UK), Shell Technology Centre Thornton, UK
The assessment of offshore explosion hazards due to accidental releases of flammable gas often requires a statistical quantification of the likely gas cloud sizes produced by a range of potential leak scenarios. Calculations using the Porosity/Distributed Resistance method within the OpenFOAM CFD code are described which are sufficiently fast to allow a statistically meaningful number of calculations to be carried out but with the accuracy of individual calculations being reasonable.
14:00 Break and networking
14:30 Modelling of Vortex-Induced Vibrations and Scour Processes for Pipeline Applications
Dr. P. Bhattacharjee, Senior Consultant, Fluid Dynamics Team, Lloyd's Register ODS, DK
Presentation in PDF
Free spans are present under a pipeline due to the natural undulation of the seabed or the creation of trenches over time due to natural scour processes. This change in environment can lead to conditions which can trigger vortex induced vibrations (VIV) which can have an impact on the fatigue life assessment. A validation study is presented first on data from a pipeline, taking into account the major physical parameters present, including waves. A set of simulations demonstrating VIV and the scour process will be presented. It shall then be demonstrated that the shape of the span trench can play a major role on the vibrational response, thus driving the need for more accurate modeling methods
15:10 Reservoirs simulation of Foam Assisted Water Alternating Gas (FAWAG) method
Dr. Svetlana Rudyk, Associate professor, AAUE, Denmark
Presentation in PDF
The presentation shows the simulation model of Foam Assisted Water Alternating Gas (FAWAG) method that had been implemented to two Norwegian Reservoirs. Being studied on number of pilot projects, the method proved successful but Field Scale simulation was never understood properly. New phenomenological foam model was tested with sensitivity analysis on foam properties to provide a guideline for the history matching process (GOR alteration) of FAWAG Pilot of Snorre Field (Statoil).
The aim was to check the authenticity of presented new foam model in commercial software whether it is implementable on a complex geological model for quick feasibility studies, either for onward practical pilot or as justification for more detailed technical study.
15:40 Break
15:50 Reservoir simulation - motivations and practical aspects
Bill Harrar, Principal Reservoir Engineer, DONG Energy
Presentation in PDF
16:20     Closing remarks
Henrik Hassing,  Head of DANSIS Committee

Members of DANSIS can participate in the seminar free of charge. Non-members are also invited to participate at a fee of 400 DKK.
DANSIS - The Danish Society for Industrial Fluid Dynamics     Email: dansis@dansis.dk