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70th EAGE Conference and Exhibition - Workshops and Fieldtrips
- Conference date: 09 Jun 2008 - 12 Jun 2008
- Location: Rome, Italy
- ISBN: 978-94-6282-104-0
- Published: 09 June 2008
21 - 40 of 91 results
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Basin Scale Exploration – A New Frontier for Desktop Visualization
Authors N. Purday, D. M. Roberts and M. ColeVisualization technology has changed dramatically over the past few years, moving
from a high end tool used only in visualization rooms by major oil companies to a
desktop solution applied to a significant range of exploration and field development
opportunities. Visualization has become an enabling technology to both speed seismic
interpretation and integrate geologic and geophysical data much more effectively than
ever before. The rapid changes in adoption are being driven by the requirement for a
significant reduction in exploration risk, cost reduction and cycle time improvement.
This paper will focus on thinking beyond current volume interpretation workflows to
demonstrate how visualization can play a vital role in Basin Scale exploration and
interpretation.
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Sismage DisplayWall: a new environment for complex Seismic Data Interpretation.
By N. KeskesSince more than ten years, the “DisplayWall” technology is growing very fast and becomes
widely used in various domains: Geosciences, Astronomy, medicine, etc.. The academic and
industrial research around this topic is also very active.
The main advantage with this technology is the ability to have multiple display content and
huge windows with high resolution.
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Utilizing the Benefits of Virtual Environments
Authors T. Holtkämper, A. Dressler and M. BogenOver the last ten years many oil & gas companies have installed Virtual Environments in
order to optimize, complement, or replace steps in their E&P workflow. The success of the
deployed Virtual Reality technology varies from company to company, but not always fulfills
set expectations.
The experiences made in the VRGeo Consortium also indicate that the potential of VR
technology is not yet used to its full extend. Only if VR technology can clearly show its
benefits over existing technology, the users are willing to adopt and integrate it into their daily
workflow. In this respect, we describe by means of illustrative examples what can be done to
better utilize the benefits of Virtual Environments.
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Sub-Surface Visualisation in BP Technology – People – Business Drivers
Authors K. Hansch and J. ThomsonBP has been an early adopter of the use of visualisation in sub-surface workflows. Over the
past 15 years the implementation of visualisation technology and the development and sharing
of skills and knowledge have led to the current routine use of visualisation in our daily work.
Visualisation is no longer seen as a discipline in itself but as a tool to help in the delivery of
our business objectives. Dedicated effort was required to reach the current level of user
engagement. A large number of lessons have been learnt during the implementation of
visualisation into the sub-surface workflows.
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Digital Oilfields: Real-time Decisions
More LessThe state of the art in visualization today is embodied in the real-time aspect of group
decision making. Real-time group decision making environments are used in many
applications in industries including engineering analysis and design in manufacturing,
government command and control for disaster response, drug design in pharmaceutical
companies, and immersive environments in academic research. However, in no industry is
the applicability and return on investment more clear than in the exploration and production
portion of the oil and gas industry.
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The Value of Visualization in Exploration and Production: Anecdotal Evidence and Quantitative Data
Authors G. A. Dorn, G. S. Pech, K. Gruchalla and J. MarbachSince the introduction of large-scale visualization systems in the energy industry over a
decade ago, discussion has focused on the relative benefits, if any, of conducting typical
exploration and development tasks in a large visualization environment vs. a desktop display.
The only industry specific information with regard to benefits has been anecdotal in nature.
Five human performance studies have been conducted over the last five years to quantify the
amount of benefit achieved in a set of directional well path planning problems using largescale
visualization. These studies have demonstrated that significant, quantifiable
improvements in efficiency and accuracy of results are achieved using large-scale
visualization environments for design engineering tasks, such as well path planning.
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Enterprise-class Virtual Environments Interoperability for the Upstream Industry―Promise or Peril
By E. J. DoddThe exploration and production (E&P) enterprise is undergoing a tectonic shift within its
information and communication technology (ICT) ecosystem. E&P companies need to better
utilize their existing assets, increase their resource portfolios and bridge the looming
knowledge gaps. In particular, the E&P Industry needs to take an active role in defining and
supporting open and free standards that integrate disparate data sources into enterprise-class,
secure Virtual Worlds. This paper briefly discusses emerging ICT research and innovation
around of Virtual Worlds into Virtual Environments. There is an evolution from today’s
classical interaction and display paradigm to the fully-integrated global enterprise using the
3-D Internet.
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NVIDIA Advanced Visualization Solutions for Oil & Gas market
More LessThe world is estimated to hold about 940 billion barrels of undiscovered oil and natural gas
resources, much of it in remote and difficult to reach places, such as deep water, deserts, and
arctic environments. Oil & gas companies are looking for technologies to help increase
accuracy of exploration and production, while reducing risks and costs. Efficient and fast data
interpretation amongst teams of specialists is key. Data have to be visualized with a maximum
of details and be shared within a small group, a large audience or with remote colleagues.
Standard 19” LCD monitor can display up to 1.9M pixels at 1600 x 1200 resolution but the
image is too small to be shared, too small to interpret efficiently and it takes far too long to
zoom in and out.
30” LCD can display up to 2.9M pixels at a 2560 x 1600 resolution, that’s great for two or
three engineers working together. But looking for 15 frames per second animation, for a fluid
seismic interpretation or reservoir simulation display, means that the system has to handle
43.5 M pixels per second. Can it be done on a standard workstation? Can you even look for
larger display size, faster frame rate for increased efficiency, from a single system?
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HoloVizio: The Next Generation of 3D Oil & Gas Visualization
Authors T. Balogh and P. T. KovácsWe present the HoloVizio system design and give an overview of Holografika’s approach to
the 3D displaying. The patented HoloVizio technology uses a specially arranged array of
optical modules and a holographic screen. Each point of the holographic screen emits light
beams of different color and intensity to various directions. With proper software control,
light beams leaving the pixels propagate in multiple directions, as if they were emitted from
the points of 3D objects at fixed spatial locations. We show that the direction selective light
emission is a general requirement for every 3D systems and the advantages of light field
reconstruction over the multiview approach. We describe the 10 Mpixel desktop display and
the 50Mpixel large-scale system that enables the collaborative work in real 3D surpassing the
limitations known at stereoscopic systems. We cover the real-time control issues at high
pixel-count systems with the HoloVizio software environment and describe concrete
developments targeting 3D oil&gas visualization applications.
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Improved asset management with network-centric visualization
By Y. NirToday’s oil and gas industry is faced with a growing need to not only find and explore new
energy reserves, but also to manage existing assets more efficiently and in an integrated way.
This involves multiple teams and people with various backgrounds and skills working
together to share information, collaborate and make faster and better decisions. The key issue
in this is usually not the collection of data but the amount of available data that is ever
increasing. This presents a considerable challenge to companies striving to exploit this
information for competitive advantage.
This paper explores how recent breakthroughs in professional visualization can help improve
the collaboration process by visualizing and sharing various types of data, and how this
ultimately leads to better asset management.
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Regional Geologic Visual Integration Offshore Brazil
Authors K. P. Boyd and D. M. RobertsRecent advances in the power of 64 bit PC hardware, and also the tremendous power
of modern visualization software applications now makes it possible to visualize
datasets which are on basin scale and even continent scale.
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Open Inventor and Avizo: commercial cross-discipline visualization tools
By F. GambaMercury Computer Systems provide commercial visualization solutions for a wide selection
of markets such as Medical, Aerospace, Oil and Gas, Fluid-Dynamics and Materials Science.
In order to provide cross-discipline effective solutions, Mercury leverages its know-how in
core graphics technology.
Modern GPUs supply the computational power to make a step forward in 3D volume
rendering quality and interactivity. After several years of academic research new techniques
becomes available in commercial solutions such as Open Inventor by Mercury and Avizo.
Extended usage of computational clusters with thousands of nodes allow the generation of
massive datasets that exceed the hardware resources of the single workstation used for
visualization. To overcome these limitations, smart management of GPU/CPU memory and
CPU/GPU computational power becomes crucial. A Large Data Management (LDM) engine
allows the user to efficiently visualize hundreds of GB of seismic data and hundreds of
millions of cells reservoir models. Mercury recently introduced a new modular visualization
framework, called Avizo, which brings all the Open Inventor technology to the end-user level.
Avizo is the best tool to experience cross-discipline visualization within the Oil and Gas
workflow.
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The Future Of Visualisation - Steering Through The Fog
By H. LaufertsThe vision of future visualisation is an environment where technology provides the means to
experience data, subsurface models and production facilities as if they were part of the real
world.
Visualisation should utilize our natural senses as in the real world: visibility in three
dimensions and a virtual reality that can be felt and touched.
We recognize the technology elements that lead the way to this vision: touch interfaces,
gesture control, holography and auto stereoscopy to name a few. These tools help us steer
through the fog and may be part of the solution to reach our vision. We do not know how
much time it will take to reach this vision, but we are convinced that given our current
business challenges we can’t wait for the developments to be made for us. We have to
promote, sponsor, encourage and actively steer our stakeholders on the road to future
visualisation.
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The Human Factor in Interpretation and Visualisation
By R. GrasE&P software has rapidly evolved from the early interpretation workstations of the 80-90s to
a sophisticated, integrated and unified system for interpretation, visualisation and increasingly
virtual or augmented reality. However, relatively less effort has been spent in investigating
how people, either teams or individuals, interact with these technologies towards realising the
value for their organisations. In recent years much emphasis has been placed towards
enabling team-based collaborative work processes within visualisation centers (Collaborative
Visualisation Environments, henceforward abbreviated as CVE’s), but a simple truth remains
that specific core tasks in E&P are performed primarily by individuals. At risk of
generalisation, whereas Development and Production are predominantly team-based work
processes, Exploration on the other hand is a task that relies heavily on an individual’s skills
for discovery. The E&P enterprise that recognizes the individual’s relevant skills and provides
an environment for both the individual as well as teams to perform optimally gains a
significant competitive advantage. Additional efforts are needed to specify and provide
visualisation environments for individuals or small teams geared towards Exploration.
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High Order Acoustic Scheme For a Wave Propagation Modeling
Authors I. Tarrass, A. C. Bon and P. ThoreWe present a high order finite difference numerical scheme to simulate the acoustic wave equation. The
scheme uses 2 coupled equations in pressure and displacement. The scheme is an 8th order in space and
a 2n order in time n ≥ 1. The parallelism of code is based on message passing implementation to handle
one simulation and a master slave paradigm to simulate a large campaign aquisition. The code has been
tested on different architectures and present a high level of portability.
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GEOCUBIT, an HPC parallel mesher for Spectral-Element Method seismic wave simulation
Authors E. Casarotti, M. Stupazzini, S. J. Lee, D. Komatitsch, A. Piersanti and J. TrompWave propagation phenomena can nowadays be studied thanks to many powerful numerical
techniques. Spurred by the computational power made available by parallel computers,
geoscientists and engineers can now accurately compute synthetic seismograms in realistic
3D Earth models. In this field, the Spectral Element Method (SEM) has convincingly
demonstrated the ability to handle high-resolution simulations at global(e.g., Komatitsch et
al., 2005), regional (e.g., Komatisch et al, 2004, Lee at al., in press) and local scale (e.g.,
Stupazzini, 2004).
The SEM is as a generalization of the Finite Element Method (FEM) based on the use of
high-order piecewise polynomial functions. In the coming Petaflops era, the SEM should
become a standard tool for the study of seismic wave propagation, both for forward and
inverse problems. The more the power provided by computer clusters, the higher the
resolution that is available for the simulations. Consequently, the definition of a good
geological model and the creation of an all-hexahedral unstructured mesh are critical.
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Massively parallel computations for the solution of the 3D-Helmholtz equation in the frequency domain.
Authors H. Calandra, I. Duff, S. Gratton, X. Pinel and X. VasseurThe topic of our work is the solution of the three-dimensional Helmholtz equation in the frequency
domain on massively parallel computers modeled by the following partial differential
equation: (view PDF), with some absorbing boundary conditions, where u is the pressure of the wave, f its frequency,
c the propagation velocity of the subsurface and g is a Dirac function that represents the wave
source in the frequency domain. This equation is involved in an inverse problem modelling a
wave propagation under Earth. The solution of this inverse problem enables geophysicists to
deduce from experimental data the structure of the subsoil. An explicit solution method (time
domain) is often considered because it keeps the memory need acceptable. But working in time
domain supposes that stability conditions on the discretization scheme hold both in time and
space, that often leads to very small time steps (i.e. large simulation time) for real problems.
One of the great advantage of the frequency domain formulation is that stability conditions of
the discretization scheme only rely on the frequency. The frequency formulation is yet much
greedier in memory than the time one’s, because standard discretization methods such as finite
difference and finite element methods leads to linear systems of size depending linearly on the
frequency. Nevertheless, according to recent trends concerning massively parallel architectures,
solving the implicit Helmholtz equation seems now feasible, because large distributed memories
and efficient interconnect become available. We shall show that linear systems of size more than
one billion can be solved by present supercomputers in a few minutes.
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The role of High-performance computing and seismic imaging and interpretation
Authors B. Biondi, B. Clapp and A. ValencianoProgresses in seismic-imaging technology are driven by advancements in data acquisition and
high-performance computing. Wide-azimuth acquisition geometries of both marine and land
data are dramatically changing the data we image. The commoditization of multi-core
processors and the availability of ultra-fast hardware accelerators (FPGAs, GPUs, Cells, …)
will change the way that we image and interpret those new data sets. These hardware
improvements will enable the application of imaging operators that are more accurate in both
the modeling of the underlying physical phenomena (e.g. wave propagation vs. ray-tracing)
and the approximation of the actual inversion of the recorded data. The future availability of
workstation with multi-core CPUs will enable the exploitation of expensive numerical
algorithms to support interpretation. This should lead to dramatic improvements in the
structural and stratigraphic interpretation in areas where the complexity of the velocity model
requires a tight loop between interpretation and processing
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Pushing limits of the 3D acoustic waveform inversion in the frequency domain
Authors H. Ben-Hadj-Ali, F. Sourbier, V. Etienne, S. Operto and J. VirieuxWe present a 3-D acoustic full waveform tomography (FWT) based on a forward problem suited for
multisource simulations. This forward problem based on the wave equation is solved in the frequency
domain using a direct solver technique, leading to an impressive request of core memory. The imaging
problem (Tarantola, 1987) is built through a local minimization of the mis t function between recorded
and synthetic data. The frequency-domain (FD) formulation of FWT was originally developed for 2D
cross-hole acquisition surveys which involve wide-aperture propagations (Pratt and Worthington, 1990).
Only few discrete frequencies are required to develop a reliable image of the medium thanks to the
wavenumber redundancy provided by multifold wide-aperture geometries. The lowest frequency and
the starting model both play a critical role in the convergence of the minimization. Since the full wave
propagation modeling is a critical issue in FWT methods, a 3D optimal nite-difference stencil has been
designed by Operto et al. (2007) that leads to 4 grid points per wavelength for an accurate modelling,
reducing the memory request when solving the large sparse linear system for each frequencywe consider.
Although present hardware con gurations limit the domain dimensions, it remains unclear where are the
different bottlenecks of the approach as the degrading conditioning of the impedance matrix or the poor
scalability when we increase the number of nodes. In this presentation, we shall provide some insights on
the feasibility and relevance of 3D frequency-domain FWT for building high-resolution velocity models
of isotropic acoustic media with one application related to the SEG/EAGE Overthrustmodel and we shall
provide an analysis for isotropic elastic media.
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Combining direct and iterative solvers for improving ef ciency of solving wave equations when considering multi-sources problems
Authors F. Sourbier, A. Haidar, L. Giraud, R. Brossier, S. Operto and J. VirieuxFrequency-domain full-waveform inversion (FWI) has been extensively developed during last decade
to build high-resolution velocity models (Pratt, 2004). One advantage of the frequency domain is that
inversion of a few frequencies are enough to build velocity models from wide-aperture acquisitions.
Multi-source frequency-domain wave modeling requires resolution of a large sparse system of linear
equations with multiple right-hand side (RHS). In 3D geometries or for very large 2D problems, the
memory requirements of state-of-the-art direct solvers preclude applications involving hundred millions
of unknowns. In order to overcome this limitation, we investigate a domain decomposition method based
on the Schur complement approach for 2D/3D frequency-domain acoustic wave modeling. The method
relies on a hybrid direct-iterative solver. Direct solver is applied to sparse impedance matrices assembled
on each subdomain, hence, reducing the memory requirement of the overall simulation. Iterative
solver based on a preconditioned Krylov method is used for solving the interface nodes between adjacent
domains. A possible drawback of the hybrid approach is that the time complexity of the iterative part
linearly increases with the number of RHS, if single-RHS Krylov subspace method is sequentially applied
to each RHS. We mention that block-Krylov techniques or de ation techniques can be used in that
case to partially overcome this effect. In the following, we introduce the domain decomposition method
before illustrating its features with 2D and 3D simulations.
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