Seismic Acquisition

Seismic Series
By OgbonLab

Design, QC, and defend a real survey, from first principles, not vendor slides.

Design, QC, and defend real surveys (marine, land, OBN, DAS, simultaneous, 4D) grounded in first-principles acquisition physics.

13 parts 90 sections Free, browser-native
Start reading → First up: What physics do we need?

Table of contents

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

Part 1: Part 0: Physics prerequisites for acquisition

  1. What physics do we need?
  2. Wavefronts, rays, and Huygens
  3. Reflection & transmission coefficients
  4. Source radiation patterns
  5. Array response & antenna theory
  6. Time & space sampling; aliasing
  7. Noise taxonomy
  8. SNR & detectability
  9. Linearity, reciprocity, stationarity
  10. Attenuation and Q from acquisition view

Part 2: Part 1: Sources

  1. Source taxonomy: impulsive vs extended
  2. Dynamite: charge, depth, coupling
  3. Vibroseis: sweeps and distortion
  4. Air-gun arrays: bubbles, ghosts, tuning
  5. Source-array directivity & ghost notch
  6. Simultaneous sources: blending & deblending
  7. Marine vibrators and emerging sources
  8. Source signature measurement & QC

Part 3: Part 2: Receivers

  1. Geophones: coil-magnet physics
  2. MEMS accelerometers
  3. Hydrophones and pressure sensing
  4. 3C / 4C sensors and mode-conversion pickup
  5. Receiver arrays and group-forming
  6. DAS: fiber-optic distributed sensing
  7. Coupling, planting, and QC

Part 4: Part 3: Survey geometry design

  1. CMP, CDP, CIG: what we are binning for
  2. Fold, offset, azimuth statistics
  3. Bin size & dip aliasing
  4. Inline / crossline templates
  5. Patch, salvo, roll-along
  6. Migration aperture & design rules
  7. Reciprocity: source / receiver duality
  8. 3D survey design end-to-end walkthrough

Part 5: Part 4: Marine acquisition

  1. Towed streamer fundamentals
  2. Source arrays underwater
  3. Dual-sensor / over-under / IsoMetrix
  4. Cable positioning & navigation
  5. Marine noise: swell, shipping, barnacle, biological
  6. OBN and OBC acquisition
  7. WAZ, RAZ, FAZ geometries
  8. Simultaneous shooting in marine

Part 6: Part 5: Land acquisition

  1. Site prep, permitting, and obstacles
  2. Vibroseis deployment in practice
  3. Shot-hole dynamite deployment
  4. Receiver deployment: cables vs nodal
  5. Land noise sources and mitigation
  6. Orthogonal, brick, zigzag, slanted geometries
  7. Weathered layer & statics from first-break refraction

Part 7: Part 6: QC during acquisition

  1. Real-time field QC, diagnosing the shot
  2. Binning QC and coverage maps
  3. Source signature QC
  4. First-break QC for statics
  5. Navigation and positioning QC
  6. Daily report & productivity metrics

Part 8: Part 7: Special geometries

  1. 2D vs 3D vs 4D vs 4C: survey dimensionality
  2. VSP: zero-offset, walkaway, walkaround
  3. 3D VSP and salt-proximity imaging
  4. Microseismic monitoring
  5. Permanent Reservoir Monitoring (PRM)
  6. Transition-zone (TZ) acquisition

Part 9: Part 8: Compressed sensing & modern methods

Part 10: Part 9: DAS and emerging technology

  1. DAS physics, Rayleigh scatter + gauge length
  2. DAS in wells vs on the surface
  3. DAS hybrid surveys with conventional
  4. DSS vs DAS, and what’s next in fibre

Part 11: Part 10: Real-field capstones

  1. Capstone, Gulf of Mexico deep-water WAZ
  2. Capstone, Middle East land nodal mega survey
  3. Capstone, onshore simultaneous-source
  4. Capstone, Brazil pre-salt OBN
  5. Capstone, North Sea 4D repeated streamer
  6. Capstone, Valhall Life-of-Field Seismic (PRM)
  7. Capstone, Marcellus frac microseismic monitoring
  8. Capstone, DAS-enabled hybrid survey

Part 12: Part 11: Self-assessment quizzes

  1. Quiz: Part 0: Physics prerequisites
  2. Quiz: Part 1: Sources
  3. Quiz: Part 2: Receivers
  4. Quiz: Part 3: Geometry design
  5. Quiz: Part 4: Marine
  6. Quiz: Part 5: Land
  7. Quiz: Part 6: QC
  8. Quiz: Part 7: Special geometries
  9. Quiz: Part 8: Compressed sensing
  10. Quiz: Part 9: DAS & emerging
  11. Quiz: Part 10: Capstones
  12. Final exam, integrated assessment

Part 13: Part 12: Acquisition design workflow reference

  1. Master acquisition design workflow

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