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Overview

Processing of reflection data. To improve the signal to noise ratioIsolation of the wanted signals (Reflections isolated from multiples and surface waves)To obtain a higher resolution by adapting the waveform of the signalsTo obtain a realistic image by geometrical correctionTo obtain informatio

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Overview

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Presentation Transcript

    1. Overview

    2. Processing of reflection data To improve the signal to noise ratio Isolation of the wanted signals (Reflections isolated from multiples and surface waves) To obtain a higher resolution by adapting the waveform of the signals To obtain a realistic image by geometrical correction To obtain information about the subsurface

    4. Result of processing of data

    5. Basic scheme of the seismic data processing

    6. Demultiplexing

    7. Dataformats SEG-D: SEG-2: SEG-Y: demultiplexed trace sequential form

    9. Editing

    11. Muting of events

    12. Geometry

    13. Raypaths for a given bin

    14. Statics Topographic Correction (elevation statics) “Uphole”-correction using shots in borehole Refraction statics: corrections for weathered layer Delay-Time Generalized reciprocal method (GRM) Deminishing residual matrices (DRM)

    15. Topographic Correction

    16. Datuming

    17. Nächster Schritt: Amplituden Ausgleich oder "scaling" Warum: s. Liste mit Gründen bei denen Amplitudenverluste auftreten können Gain-Funktion ist ein spezielles Problem Beispiel-Schuss Beispiel shot-gatherNächster Schritt: Amplituden Ausgleich oder "scaling" Warum: s. Liste mit Gründen bei denen Amplitudenverluste auftreten können Gain-Funktion ist ein spezielles Problem Beispiel-Schuss Beispiel shot-gather

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