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ICTD International Centre for Training and Development

Advanced Seismic Analysis of Stratigraphic Sequences

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About the course

Seismic stratigraphy is a powerful tool for exploration and exploitation, especially when the rock-fluid information within the seismic wavelet (reflection character analysis) is integrated with the lithofacies-stratigraphic information, which is determined from reflection group geometry (sequence analysis). The methods used in this course do not rely upon either cosmetic processing or interpretation as an art; instead, practical methods of seismic stratigraphy are employed as a science, based upon firm, tested principles that are applied to a spectrum of tectonic structural styles and depositional environments.

This rigorous, five-day course is a problem-oriented, hands-on workshop including significant group discussion and presentation. Participants learn how to make seismic modeling-interpretation judgments as a basis for seismic-facies and reflection character analysis. Case studies for exploration and development incorporate 2D and 3D seismic data with well data selected from around the world. Each participant should bring a hand-held calculator to class.

Course Objectives

Upon successful completion of this course, the delegates will be able to:

  • Evaluate rock-fluid information from wavelet analysis (frequency, velocity, Q. seismic attributes, and AVO)
  • Understand the strengths and weaknesses of geovalidation using and misusing synthetics, seismic inversion, and VSP
  • Determine fault mechanical stratigraphy through proper interpretation of fault imaging
  • Understand the differences, weaknesses, and strengths of both the Vail with the Galloway sequence paradigms and when to optimally employ them
  • Develop sea level curves from micropaleontology
  • Construct detailed seismic facies maps and understand their relationship to Walter's law
  • Classify deltas based upon their seismic characteristics
  • Differentiate basin floor fan facies and parasequence sets
  • Interpret clastic and carbonate depositional system responses to allocyclic and autocyclic processes and the effects upon reservoir architecture and seal potential
  • Optimally interpret parasequence set fairways for exploration
  • Geophysically characterize reservoirs for optimizing development

Course Outline

Day 1

  • Introduction: review of philosophy and epistemology
  • Application of geophysical fundamentals (wave theory, attributes, frequency substitution, and coherency)

Day 2

  • Amplitude variation with offset (lithologies, fluids, gases, porosities, and pressures)
  • Fault mechanical stratigraphy
  • Vail and Galloway sequence theory and application

Day 3

  • High resolution sea level curve generation from micropaleo
  • Shallow and deep water siliciclastic sequences
  • Seismic facies and paleo-environmental analysis

Day 4

  • Reservoir scale geophysics using the wavelet
  • Imaging hydrocarbons

Day 5

  • Geohistory reconstruction
  • Optimizing exploration and development

Course Methodology

A variety of methodologies will be used during the course that includes:

  • (30%) Based on Case Studies
  • (30%) Techniques
  • (30%) Role Play
  • (10%) Concepts
  • Pre-test and Post-test
  • Variety of Learning Methods
  • Lectures
  • Case Studies and Self Questionaires
  • Group Work
  • Discussion
  • Presentation

Who should attend

This course is intended for all geophysicists, geologists, and explorationists.

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