3D Seismic Interpretation

Seismic Series
By OgbonLab

From zero to confident interpreter, one volume at a time.

From zero to confident interpreter: waves, volumes, horizons, faults, attributes, and reservoir characterization.

11 parts 72 sections Free, browser-native
Start reading → First up: Waves: amplitude, frequency, wavelength

Table of contents

Every section is a working session: text, math, code, interactive widgets. Click any title to jump in.

Part 1: Part 0, Prerequisites

  1. Waves: amplitude, frequency, wavelength
  2. Reflection, refraction, and Snell’s law
  3. Rocks 101: the three families we meet
  4. Geologic time and sedimentary basins
  5. Wells and logs: the other source of truth

Part 2: Part 1, Foundations of Seismic

  1. Welcome: seeing a seismic cube
  2. Acoustic impedance and reflection coefficients
  3. The convolutional model
  4. From shot to stack: processing at a glance
  5. Migration: why unmigrated data lies
  6. Time vs depth: the two domains of seismic
  7. From 2D lines to 3D volumes
  8. Resolution and the wavelength problem

Part 3: Part 2, The Interpreter's Toolkit

  1. How to look at a 3D volume
  2. Polarity, phase, and wavelet conventions
  3. Picking horizons: methodology and practice
  4. Auto-tracking: when it wins, when it fails
  5. Faults in 3D: how to see them, how to pick them
  6. QC: when your interpretation is wrong, and how you know

Part 4: Part 3, Structural Interpretation

  1. Structural styles: extension, compression, strike-slip, salt, gravity
  2. Fault analysis: throw, heave, dip, and seal
  3. Folding mechanisms: drape, fault-bend, fault-propagation, detachment
  4. Building a structural framework: from picks to 3D model
  5. Salt tectonics: diapirs, walls, canopies, and welds
  6. Trap geometry and prospect identification

Part 5: Part 4, Stratigraphic Interpretation

  1. Reflection terminations: onlap, downlap, toplap, truncation
  2. Sequence stratigraphy: sequences, surfaces, and systems tracts
  3. Depositional systems: fluvial, deltaic, shoreface, carbonate, deep-water
  4. Channel systems: meandering, braided, distributary, submarine
  5. Deep-water turbidite fans: anatomy and reservoir architecture
  6. Seismic geomorphology: reading paleo-landscapes from 3D volumes

Part 6: Part 5, Rock Physics & AVO

Part 7: Part 6, Seismic Attributes

  1. Amplitude attributes: RMS, envelope, and their friends
  2. Frequency attributes: spectral decomposition
  3. Geometric attributes: dip, azimuth, and curvature
  4. Coherence and discontinuity attributes: seeing the unseen faults
  5. Attribute combination: RGB blending and classification
  6. Attributes for reservoir characterization: putting it together

Part 8: Part 7, Reservoir Characterization & QI

Part 9: Part 8, Advanced QI Topics

  1. Geomechanics: elastic to stress and fracture
  2. Time-lapse (4D) seismic: monitoring reservoir changes
  3. Anisotropy and azimuthal attributes: fractures and stress
  4. Full-waveform inversion: matching observed to modeled waveforms
  5. Machine-learning QI: neural networks for facies classification
  6. CO2 storage and subsurface monitoring: closing Part 8

Part 10: Part 9, Capstone Case Studies

  1. Deepwater turbidite QI: Girassol-style fluid prediction
  2. Chalk field 4D compaction: Valhall over 40 years
  3. Subsalt imaging: Thunder Horse from Kirchhoff to FWI to QI
  4. Unconventional completion design: Wolfcamp shale in the Permian
  5. Pre-salt carbonate: Lula/Tupi microbialites under 2 km of salt
  6. CO₂ storage retrospective: Sleipner from 1996 to today

Part 11: Part 10: Self-Assessment Quizzes

  1. Quiz, Part 0: Prerequisites
  2. Quiz, Part 1: Foundations of Seismic
  3. Quiz, Part 2: The Interpreter’s Toolkit
  4. Quiz, Part 3: Structural Interpretation
  5. Quiz, Part 4: Stratigraphic Interpretation
  6. Quiz, Part 5: Rock Physics & AVO
  7. Quiz, Part 6: Seismic Attributes
  8. Quiz, Part 7: Reservoir Characterization & QI
  9. Quiz, Part 8: Advanced QI Topics
  10. Quiz, Part 9: Capstone Case Studies
  11. Final Exam, 50-question integrated assessment

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