Acquisition Training

Training Schedule

Basics:

Recap: Sampling, Aliasing, Reciprocity, Shannon, Fourier (Exercise filter design) Sound principles ; Acquisition aspects, processing aspects (analogies) Quality; Resolution, Signal to noise, Mode conversion, Amplitude faithfulness Surveying; Ideal / Pre-plot; practical limitations; costs, irregularities, remedies, interpolation, etc. (Exercises)

Sources, Detectors and Instruments:

Land sources, Marine sources, Shear sources Scaling laws, (Exercise), summation of sources, simultaneous sources Detectors, Streamers, Multi-component, Instruments Array design; Land (patterns), Marine (airgun array)

Survey design and execution:

Standard geometries, spatial sampling, illumination, multiplicity, offset range 2D, 3D, Land & Marine aspects, Key parameters; ghost, source depth and size, noise spread. Lead-in lead-out multiplicity, Migration aperture: (Exercise) P-wave, S-wave, Special geometries, crooked line, survey edge, survey overlap (Exercise) Field tests, Instrument QC, Monitors, Detectors (planting), Sources (FTB, similarity), Spread continuity.

Repeatability and Efficiency

OBS methods, coupling, steerable streamers (video), sampling density. Time lapse (4D) aspects Cost aspects (production-, line change-, standby-time) , station count, reliability Multi-streamer, Simultaneous methods, Slip sweep, etc., Surveying optimization methods: SurvOpt (demo), Shooting and recording patterns

Summary and capture:

Exercise survey design, Review principles: Examples: Q-method, Ghost effect, Absorption, Patterns. Limits in processing, Multi-trace algorithms, Dan Wisecupís HiRes, Trace inversion limits, Examples from practice: Buried hydrophones vs surface array, Subbottom profiler, etc., Questions, Discussions