Seismic Processing III
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Transcript of Seismic Processing III
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ESCI 444-Exploration Geophysics IIReflection Seismic Data Processing
Steve H. Danbom, Ph.D., P.G.
Adjunct Professor
Office - Room 206AOffice Hours By Appointment
Lecture Week 14
Processing seismic reflections:3-D seismic data
Spring, 2007
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D a n b om G e op hy si cs
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SOME DATA FROM ARCO
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To make an isochron map of a domal feature, trace sequentialtime slices of a common-phase event onto a common image.
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3-D seismic data are collected in bins.
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3-D seismic data seiscrop (top) and profile (below) thatconnects wells that are not in a straight line.
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EXAMPLE OF IMAGED FAULT
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ORIENTATION OF 2-D LINE...
There is an axiom in reflection
seismology that says orientation
of the seismic reflection line is
the single most important item in
acquisition and processing of thedata. These lines, taken from a
3-D data volume illustrate this.
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HERES A GOOD IDEA
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Certain identified formational
tops can be isolated in the 3-D
data volume and then the other
data can be made transparent...
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OCEAN BOTTOM SEISMIC
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3-D SURVEY WITH
GEOPHONES
For this example the seismic
data shown have been 3-D
migrated and the marine data
acquisition was acquired with
geophones connected to theocean bottom instead of
hydrophones trailed in a
streamer behind the boat.
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3-D EXPLORATION
SEISMOLOGY
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