• 060 Ma
    Late Paleocene

    March 2007

  • 050 Ma
    Early Eocene

    March 2007

  • 040 Ma
    Middle Eocene

    March 2007

  • 030 Ma
    Early Ollgocene

    March 2007

  • 020 Ma
    Early Miocene

    March 2007

  • 010 Ma
    Late Miocene

    March 2007

  • 000 Ma
    Present Day

    March 2007

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IMODE 201: Multishooting

Class Information

Upcoming Class Information

Date: TBA
Location: Houston, TX
Map it!

IMODE 201 is open for registration! Attendees can register online for the class.

Detailed Overview

Significant savings in time and money in acquiring seismic data, in computer simulation of seismic data, and even in processing and storing them can be achieved by generating waves from several source locations simultaneously instead of one single-source location at a time, as is currently the practice. In fact, the cost of performing several shots simultaneously is almost identical to that of performing one shot. The simultaneous multishooting concept in seismic acquisition and processing, which we are concerned with in this short course, is based on this property. We will address the following four issues:

  • how to generate multishooting data
  • how to simulate multishooting data on the computer
  • how to decode multishooting data
  • how to image multishooting data without decoding them

The course is intended for geophysicists working in data acquisition and processing and R&D and for people with an interest in understanding current and emerging technologies for seismic data acquisition and processing.

Course Outline

Coding and Decoding: Instantaneous Mixtures

  • Estimation of the mixing matrix
  • Some background on sparsity optimization
  • Separation based on ICA decomposition
  • Separation based on phase encoding
  • Array-processing decoding methods

Coding and Decoding: Convolutive Mixtures

  • Single-mixture data in the F-X domain
  • Single- and multiple-mixture data in the T-F-X domain

Imaging of Multishot Data

  • Denoising of the vertical component of the particle velocity
  • A reconstruction of primaries
  • The sea-level-based demultiple
  • Formulation of the migration of multishot data
  • Velocity-migration analysis
  • ICA for seismic imaging and monitoring

Numerical Modeling Using the Multishooting Concept

  • Perturbation theory and nonlinear superposition in data decoding
  • Array-processing-based decoding of FDM data
  • The source-signature-based decoding of FDM data

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