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ESCI 444Exploration Geophysics II Reflection Seismic Data Processing

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Title: ESCI 444Exploration Geophysics II Reflection Seismic Data Processing


1
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 10 Processing seismic
reflections multicomponent data
2
For isotropic conditions, multicomponent data for
a reflection with no dip would be active on Z
component only.
3
For isotropic conditions, multicomponent data for
a reflection on a dip line with steep dip might
be equally active on the X and Z components.
4
For isotropic conditions, multicomponent data for
a reflection on a dip line with slight dip would
be active on X Z components.
5
For isotropic conditions, multicomponent data for
a reflection on an oblique line with steep dip
might be equally active on the X, Y and Z
components.
6
Figure showing the use of the hodogram plot,
which shows particle motion of an arriving signal
event as a function of time.
7
Each dot in the hodogram plot shows the amplitude
on component 1 plotted against the amplitude on
component 2 for each time sample of the signal.
8
More discussion on the use of the hodogram.
9
New axes after rotation to maximize energy on
component 1.
10
At the CSEG talkI discussed this framework for
operating
11
Does anybody in the audience remember the SEG
Delphi Survey?
12
Some of the results from the SEG Delphi Survey.
13
3C Land Acquisition
14
3C Marine OBS Acquisition
15
Rotating Recorded 3C Data
16
Common Receiver Gather (Before)
17
Source-Centered Cylindrical Coordinates
18
Common Receiver Gather (After)
19
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20
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21
Stacks as f(azimuth)
22
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23
TLE November, 1999
24
Section Introduction
25
Suggested Reading
  • Converted-Wave Imaging of the Valhall
    Reservoir, by Thomsen, et al., 1997 EAEG
    Meeting.
  • Processing of P-Sv Surface-Seismic Data
    Anisotropy Analysis, Dip-Moveout and Migration,
    by Harrison, 1992 Doctorial Dissertation, The
    University of Calgary.
  • Multicomponent Vp/Vs Correlation Analysis, by
    Gaiser, Geophysics, 1996, 61, 1137-1149.
  • Rapid Map and Inversion of P-Sv Waves, by
    Stewart, Geophysics, 1991, 56, 859-862.
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