ESCI 444Exploration Geophysics II Reflection Seismic Data Processing

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ESCI 444-Exploration Geophysics IIReflection
Seismic Data Processing
Spring, 2007

• Steve H. Danbom, Ph.D., P.G.
• Adjunct Professor
• Office - Room 206A
• Office Hours By Appointment

Lecture Week 12 Processing seismic
reflections interpretation
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COMBINING SEISMIC AND WELLS ON WORKSTATION
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Chart with magnetic polarity reversals, standard
age nomen- clature, fossil record, seismic
stratigraphy, eustasy for Cenozoic
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The time-average equation is useful in seismic
interpretation.
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VSP Outline

• IDENTIFY WAVEPATHS
• DOWNWAVES
• Measure source signature
• Measure wavefront spreading loss
• Measure frequency and Q loss
• UPWAVES
• Tie time to depth
• Measure seismic wavelet
• See ahead of bit
• PITFALLS
• SUMMARY

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VSP Montage
Sonic Log
Seismic(-135deg) Corridor Synth Inside
Depth (ft)
Time (sec)
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Review of the many velocity terms used in this
business.
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Review of the many velocity terms used in this
business.
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Review of the many velocity terms used in this
business.
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Review of the many velocity terms used in this
business.
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Review of the many velocity terms used in this
business.
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Remember this velocity scheme for quick dirty
interpretation.
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DONT COUNT OUT 2-D
2-D image of the plutons near Rio de Janeiro
and close-up...
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MODELING SALT DOMES
BEFORE-STACK DEPTH MIGRATION Becoming
commonplace in the business is
before-stack depth migration. Here this
methodology is being used for a Gulf-coast salt
dome image to increase accuracy of the final
interpretation.
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ITS WORTH THE EFFORT
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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From Oz Yilmaz
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