Download ppt - Basic Seismic Processing

Basic Seismic ProcessingBasic Seismic ProcessingINPUT

FILTER

CMP Gather

NMO

STACK

MIGRATE

DISPLAY

GEOM

VEL ANAL

STATICS

MUTE

More Seismic ProcessingMore Seismic Processing

INPUT

BP FILTER CMP Gather

NMO

STACK

MIGRATE

DISPLAY

GEOM

VEL ANAL

STATICSDEMUX

VIB CORR

FK FILTER

DECONDMO/

MIGRATE

SAVE

DECON

FK FILTER

MUTE

GAIN RCVR

COHERENCYENHANCE

COHERENCYENHANCE

TIMETO

DEPTH

EDIT

SP to CMP GatherSP to CMP Gather

SP to CMP GatherSP to CMP Gather

Shot Gathers

CMP Gathers

GathersGathers

NMONMO

NMONMO

Original Too Slow Too FastJust Right

NMO Layered MediumNMO Layered Medium

NMO StretchNMO Stretch

RMS VelocityRMS Velocity

NMO vs dipNMO vs dip

Flat Slow Flat Fast Dip Slow

V = V0/cos

Estimating VEstimating Vstackstack


Velocity Spectra


Constant Velocity Gathers (CMP)


Constant Velocity Stacks

NMO and NoiseNMO and Noise

Decreasing S/N

Velocity SpectraVelocity Spectra

Horizon Velocity AnalysisHorizon Velocity Analysis

Velocity EstimatesVelocity EstimatesCMP No.

Tim

e, s

ec

MutingMuting

CMP NMO NMO+Mute

StaticsStatics

StaticsStatics

StaticsStatics

Before

After

StackStack