Next Generation 3D Imaging Models Bill Abriel Bee Bednar Biondo Biondi Arthur Cheng Stewart Levin

Window of opportunity for cooperative project Computational Cost Years Too expensive 3-D two-ways acoustic 3-D two-ways elastic ? 3-D one-way elastic 2.5-D two-ways elastic No need of cooperative project

Window of opportunity for cooperative project Computational Cost Years Too expensive 3-D two-ways acoustic 3-D two-ways elastic ? 3-D one-way elastic 2.5-D two-ways elastic No need of cooperative project 3-D two-ways elastic

“Geological Model Working Group” task Design 3-D Elastic model that is: –Computable in 3-D as an acoustic model (e.g Vp,  by the end of 2007 –Contains challenging and realistic structures (salt bodies and faults) and velocity variations (shallow gas, low-velocity under salt, overpressure) to test the limits of present and future 3-D seismic (acquisition and imaging) technologies –Contains 2-3 reservoirs with complex and realistic architecture and that produce interesting “AVO’’ effects when computed as an acoustic model (e.g. Vp,  –Is ready for fluid-flow simulation and computation of elastic/acoustic time-lapse surveys Identify in the 3-D Elastic model one or two 2-D slices: –Suitable for elastic 2.5-D modeling (single line of 3-D point source elastic modeling) –Suitable for non-seismic modeling/inversion, in particular for: Gravity Active-sources EM Magneto-telluric …..

“Geological Model Working Group” & “Numerical Modeling Working Group” Determine parameters of 3-D Elastic model that define a realistic computational task and capture important features of the model: –Determine maximum frequency needed to resolve reservoir stratigraphy –Determine shot-aperture and recording time to capture all dips (overturned events?) present in the model –Determine spatial sampling to avoid spatial aliasing Define model representation(s), software tools, and appropriate interfaces

SEG Convention Workshop Goal: Gather momentum before and at SEG convention to secure wide support for the project (e.g. sign up paying companies). “Conceptual design” of 3-D elastic model Cross-validation of numerical code against Delft physical model (ZMAART) Organizational structure and legal framework Detailed plan for computations (Grid vendors, spare time on companies clusters) Initial plan for archival and distribution (including data compression) Involved sister societies (SPE and AAPG) and non- seismic SEG members Firm commitments by “founding members”

Objectives of this meeting Finalize charter and membership of “Geological Model Working Group” –Agree on main elements of 3-D Elastic model (e.g. salt typology, reservoir stratigraphy, velocity anomalies) –Agree on main contributors to each of these elements –Agree on model representation and software tools. –Agree on time-table for “Geological Model Working Group” from now to SEG. Make progress toward formation of “Numerical Modeling Working Group” Make progress toward finalizing organizational structure of SEG Modeling Consortium Discuss nominations for Project Manager position and agree on a recommendation to the Executive Committee of the SEG Modeling Consortium