Research Collection

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Research Collection

Educational Material

Reflection seismic 1 script

Author(s):

Kruk, Jan van der Publication Date:

2001

Permanent Link:

https://doi.org/10.3929/ethz-a-004363847

Rights / License:

In Copyright - Non-Commercial Use Permitted

This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use.

ETH Library

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Loading of the data/conversion Demultiplexing

Editing Geometry

Amplitude correction Frequency filter Deconvolution

Velocity analysis

NMO/DMO-Correction Stacking

Migration

Measurements Navigation

Printing/storage Printing/storage

CMP-Sorting

Prestack

Poststack

Post-processing

Pre-Processing

Basic scheme of the seismic data processing

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Horizontal Reflector CMP = CDP CMP = CDP

CMP≠ CDP CMP≠ CDP Dipping Reflector

CMP = common mid point CDP = common depth point

Dip move out (DMO)

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NMO:

coordinate transformation from y

_n

-t to y

_n

-t

_n

(A Þ B) DMO:

coordinate transformation from y

_n

-t

_n

to y

₀

- τ

₀

(B Þ C) Zero-offset migration:

coordinate transformation from y

₀

- τ

₀

to y

_m

- τ (C Þ D)

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Selected CMP gathers from a 2D marine dataset

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Selected CMP gathers from a 2D marine dataset

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Selected CMP gathers from a 2D marine dataset

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Selected CMP gathers from a 2D marine dataset

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Selected CMP gathers from a 2D marine dataset

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Without DMO correction With DMO correction

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Without DMO correction

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With DMO correction

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Velocity field used to stack the CMP gathers

Without DMO correction With DMO correction

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NMO correction of DMO corrected gathers

Without lateral varying and with lateral varying velocity

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NMO correction of DMO corrected gathers

Without lateral varying and with lateral varying velocity

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NMO correction of DMO corrected gathers

Without lateral varying and with lateral varying velocity

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CMP stack and

DMO stack

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CMP stack and

DMO stack

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CMP stack and

DMO stack

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Comparison between Migration of

CMP stack and

DMO stack

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Comparison between Migration of

CMP stack and

DMO stack

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Comparison between Migration of

CMP stack and

DMO stack

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Time migration of CMP and DMO stack

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Time migration of CMP and DMO stack

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