Tools for Seismic Reservoir Characterization: Pre-Stack Seismic Inversion

RCM/PRESTACK

Who should attend?

  • This course makes participants able to perform a pre-stack seismic inversion, feasibility, QC and some clues to interpret the results. This training can be followed by the Post-Stack Seismic inversion session to complete inversion technique skills.
Audience :
  • Geophysicists, and senior/junior geoscientists with a solid seismic background knowledge.

Level : Advanced

Course Content

  • INTRODUCTION & REMINDERS

      • Model-based pre-stack inversion: What for? How does it work?
      • Examples.
  • DATA LOADING & FEASIBILITY

      • Loading well, seismic, horizon data.
      • Initial feasibility: what is the purpose of this inversion? Analysis of the data.
      • Gather analysis and preconditioning.
  • WELL-TO-SEISMIC CALIBRATION & WAVELETS

      • Sonic log correction.
      • Seismic wavelet extraction and analysis.
      • Well-to-seismic calibration.
      • Choosing final wavelets.
  • INITIAL MODELING

      • Role of initial or low frequency model.
      • Choosing wells and horizons.
      • Initial model building: IP, IS, Rho.
  • INVERSION TESTING & RUNNING

      • Inversion parameter sensitivity testing.
      • Running final inversion.
      • QC of inversion results.
  • INTERPRETING THE RESULTS

      • Deliverables: IP, IS, Rho.
      • Generating “Lamé” parameters.
      • Clues for Interpretation of pre-stack inversion.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • run a feasibility study for seismic pre-stack inversion,
  • prepare and load data for seismic pre-stack inversion,
  • run and supervise a seismic pre-stack inversion,
  • perform quality control and interpret the results.

Ways & Means

  • The training will be performed in workshop mode, using a standard case study*. Interactive presentations, exercises, document analysis will help to understand the key steps.
  • Dedicated industry software will be used for this training.
  • Software used during workshops: with courtesy of Schlumberger.