Dr. Patrick O'Leary
In Situ Analysis with ParaView Catalyst
High performance computing moves towards exascale where the "FLOPS are free" and data movement is the primary bottleneck. The current simulation approach, which relies extensively on I/O resources, simply does not or will not scale. To deliver useful information to the scientist, engineer and/or medical researcher, it is clear that we must manage data movement, perform analysis in situ, and leverage advanced analysis algorithms. In this talk, Dr. O'Leary describes ParaView Catalyst, a framework for in situ analysis. By tightly coupling a simulator with ParaView Catalyst, it is possible to circumvent the bottlenecks associated with the cycle of storing and retrieving data for analysis to and from disk. Dr. O'Leary describes this coupling demonstrating how in situ visualization and analysis pipelines can be nimbly implemented.
Dr. Patrick O'Leary is Assistant Director of Scientific Computing at Kitware, Inc. He will be presenting his work Friday, April 19 from 12:10 - 1:00 p.m. in the Energy Innovation Center's Encana Auditorium (Room 201).
Download the flyer for Dr. O'Leary's presentation.
Dr. S. Majid Hassanizadeh
Darcy Lecturer - "Capillarity in Porous Media, on Micro- and Macroscale, Revisited"
S. Majid Hassanizadeh, Ph.D., has been a professor of hydrogeology on
the faculty of geosciences at Utrecht University since 2004 and is the senior
adviser with the Soil and Groundwater Department of Deltares research
institute. He earned his B.Sc. from Pahlavi University in Iran, and his M.E.
and Ph.D. from Princeton University; all three degrees are in civil
engineering. Hassanizadeh has worked at Abadan Institute of Technology and
Yekom Consulting Engineers, both in Iran, and the National Institute of Public
Health and Environment and Delft University of Technology in the Netherlands,
the latter of which named him an Antoni van Leeuwenhoek professor in 2001-2003.
He has also held visiting faculty positions at the University of Notre Dame;
University of Bordeaux, France; EPF Lausanne, Switzerland; and Stuttgart
In many soil and
aquifer systems, one encounters simultaneous movements of two or more
immiscible fluids. These systems are modeled using a modified form of Darcy's
law, mass or volume balance equations, and an empirical relationship between
capillary pressure and saturation. In this lecture, Dr. Hassanizadeh presented the following topics:
- Explain the general
understanding that capillary pressure is equal to the difference in
pressures of two fluids. At microscale, this difference is given by the
Young-Laplace equation, which prescribes an inverse relationship with the
mean radius of curvature.
At macroscale, the difference in fluid pressures is assumed to be an
algebraic empirical function of saturation, as mentioned above.
- Provide a unifying approach
to the theory of capillarity based on rational thermodynamics.
- Present alternative
definitions of capillary pressure on both micro- and macroscales. In
particular, Hassanizadeh will make a clear distinction between capillary
pressure and pressure difference of fluids.
- Show that the difference in
fluid pressures is a function of boundary conditions and dynamic
properties of the system, such as flow rate or dynamic viscosities, based
on theoretical, experimental, and computational results.
- Propose that the capillary
pressure must be an intrinsic property of the fluids/solid system and
independent of dynamics of the system.
- Introduce specific
interfacial area (area of fluid/ fluid interfaces per unit volume of
porous medium) as a new state variable to account for the fact that
capillary pressure is a surface phenomenon and not a volumetric one.
- Present theoretical,
experimental, and computational evidences that show the empirical
capillary pressure-saturation curve should be replaced with the capillary
pressure-saturation-interfacial area surface rooted in thermodynamic
Download Dr. Hassanizadeh's abstract
Dr. Zee Ma
"Petroleum Resource Evaluation and Reservoir Characterization Modeling"
Dr. Zee Ma received his Ph.D. in Mathematical Geology and Geo-informatics in 1987 from the Institute National Polytechnique de Lorraine (INPL) - Ecole de Geologie de Nancy (France). For over 23 years, he has worked for major oil and service companies, including Total - Elf (Pau, France), Western Atlas (now Baker Hughes), ExxonMobil, and Schlumberger. He is currently a principal geoscientist at Schlumberger (Denver, Colorado), a position he has held since 2004. Dr. Ma has conducted and/or advised on nearly a hundred reservoir studies from around the world, and published many articles on reservoir characterization, modeling, and mathematical geosciences applications.
Dr. Ma's presentation addressed hydrocarbon resource evaluation which integrates multiple disciplines, including geology, geophysics, petro physics, and reservoir engineering. This multifaceted problem must be solved through integration of these disciplines for accurate resource evaluation and management. In this presentation, he discussed a number of key issues in subsurface formation and resource evaluation, including problems encountered in the analysis and modeling of seismic attributes, net-to-gross porosity, fluid saturation, and permeability. Though not presently well known, failure to address these issues can lead to significant inaccuracies in resource evaluation and reservoir management. He also discussed a number of advanced reservoir characterization and modeling techniques that are used to solve these important problems.
Download the flyer for the January 2011 presentation