A partner of excellencefor oil and gas professional development

E-124 - 3D Seismic Interpretation Workshop

10 days GEO/SEISINTERP
Level
Proficiency
Audience
  • E&P professionals with previous experience in seismic interpretation.
Purpose
  • This course provides a practical understanding of 3-D seismic structural interpretation in order to identify prospect locations.
Learning Objectives
  • Upon completion of the course, participants will be able to:
  • get familiar with a 3-D seismic structural interpretation workflow,
  • perform a seismic structural interpretation: seismic data QC, well-to-seismic tying, horizons and faults picking, structural model construction and trap identification,
  • use a velocity field to perform a time-to-depth conversion,
  • identify structural prospects.
Prerequisite
  • Highly recommended: fundamental knowledge in seismic wave propagation, acquisition and processing, as well as in structural geology.
Ways and means
  • Interactive presentations, exercises and document analysis.
  • 80% of training duration is dedicated to workshop on PC, using a seismic interpretation software tool from the industry.

Week 1
  • Team work on 3D case studies (extensional context).
Structural interpretation - Prospect geometry identification
  • Workshop presentation and objectives (0.5 d)
  • Survey introduction - Geophysical context.
  • Geology and petroleum system overview.
  • Prospect objectives.
  • Seismic data analysis and QC (0.5 d)
  • Parameters for seismic displays: vertical sections, time slices, composite sections, 3D view.
  • Seismic data analysis: noises, multiples, footprints, frequency content, smoothing.
  • Seismic data preparation: smoothing/filtering for structural interpretation vs reservoir interpretation.
  • Well-to-seismic tying and horizons identification (1 d)
  • Well data calibration to identify main geological markers and main reservoir layers.
  • Synthetic seismogram calculation.
  • Seismic data picking and mapping – Potential traps definition (2.5 d)
  • Structural interpretation (in Time) of mains horizons  key horizons and faults picking (time picking: manual, guided, automatic, grid, and 3D picking), and correlation.
  • Picking results QC and estimation of uncertainties.
  • Volume and surface attributes calculation and analysis.
  • Surfaces generation to produce a time model.
  • Mapping.
  • Velocity model construction and time-to-depth conversion (0.5 d)
  • Interfaces selection for modeling.
  • Seismic velocities of intervals  editing and smoothing, control and correction with reference wells.
  • Velocity model construction via layer stripping.
  • Time-to-depth conversion.
Week 2
Introduction to seismic reservoir analysis
  • Potential reservoirs analysis (3.5 d)
  • Reservoir picking and modeling.
  • Surface attributes calculation and analysis.
  • Interval attributes calculation and analysis.
  • Structural prospects identification and evaluation (1.5 d)
  • Entrapment, reservoir extension.
  • Time vs depth structures comparison.
  • Uncertainties assessment.
  • Recommendations.
Summary, synthesis & wrap-up
2017 course calendar
Language Dates Location Tuition Register
Nov 06 - 17 Rueil €6,650 Online