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E-154 - Borehole Seismic

5 days GEO/BORESEIS
Level
Proficiency
Audience
  • E&P geoscientists with no or weak experience in borehole seismic.
Purpose
  • This course provides a comprehensive understanding of borehole seismic: the bridge between downhole and surface data.
  • Ultimately, to improve knowledge of reservoir characteristics.
Learning Objectives
  • Upon completion of the course, participants will be able to:
  • understand fundamental concepts of borehole seismic and different borehole seismic technologies,
  • follow or supervise design and operations of standard borehole seismic acquisition and/or processing,
  • ensure a reliable surface seismic calibration.
Prerequisite
  • It is highly recommended to have a good knowledge of fundamentals in seismic wave propagation, acquisition and processing, as well as in structural geology.
Ways and means
  • Interactive presentations, exercises, document analysis and videos.

Introduction to borehole seismic 0.5 day
  • Borehole seismic objectives and applications.
  • Fundamentals: seismic, rock physics and wave propagation.
  • Borehole seismic and surface seismic.
Borehole seismic acquisition 0.5 day
  • Equipment.
  • Typical borehole seismic acquisition techniques.
  • Preparation & supervision.
  • Case studies and exercises.
Borehole seismic processing 1 day
  • Surface seismic calibration: time vs. depth relationship.
  • Synthetic seismogram.
  • VSP processing principles: up & down wavefield separation, up wavefield demultiplying, corridor stack.
  • Wavelet matching.
  • Rules for surface seismic calibration.
  • Case studies and exercises.
Borehole seismic 2D & 3D imaging 1 day
  • 2D & 3D imaging: wavefield separation, demultiplying up wavefield, imaging.
  • Case studies and exercises.
Special products from borehole seismic 0.5 day
  • Surface seismic processing driven by borehole seismic.
  • Fracture detection from microseismic.
  • Pore pressure prediction.
  • Calibration on time migrated seismic.
  • Case studies and exercises.
Borehole seismic applications & interpretation 1 day
  • Surface seismic calibration, imaging and prediction.
  • Reservoir characterization.
  • Monitoring.
  • Case studies and exercises.
Advanced features 0.5 day
  • Resolution enhancement: cross-well seismic.
  • Permanent sensors, microseismicity.
  • 4C / 3D / 4D surveys, SWD: Seismic While Drilling.
  • Discussion and conclusions.