Page 127 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists
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109 Ry (a). dif- gath-
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Processing Fe Ry Fe Fe f Ay Fe raypaths from reflections whereby CMP in originally
Re As Fy Gather three CMP traces interface, straight distance primary error, and traces to
Common ee Ss, Ae ! Fy Fei CMP Common for three shot records. Highlighted the to increasing “tune” trial applied that events
Shot2 s Fy and gather for down with best commonly are that
Shot3 Ss, Db Le— directly time that is corrections so
and shot gathers diagram (time in increase velocities process (Tyyo) Tyyo
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Gathers x— Fe A, Raypath diagram traces. T-axis shot to hyperbolic source. determines 5.10). (Fig. time moveout velocity
Shot Ry FR, A, Bin me ee ee Gather.a) midpoint (CMP) = ty = Tymo analysis stacked are normal desired
1 5.9 three common Velocity traces ferent A ers.
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a) Selected raypath and gather for a primary reflection. be may Certain is profile be must of reflection can Geldart, are in taken trace hyper-
Analysis surface multiple on raypath diagram data Earth. the product interpretation processing and gathers highlighted gather, 3-fold a follows
Waveform 5.8 FIGURE shotpoint shotpoint gather. the that the that final literal seismic of Sheriff shot traces CMP one interface
And is method within created, so The to process to treatment of 9 different three same the comprises receiver to
Processing, reflection depth mimicking image the section. cross pitfalls many taken steps detailed Chap. 1980; from traces The gathers. 5.9b; Fig. illustrations, horizontal a Tymo interface,
Acquisition, seismic enhancing geological there are 6). general and thorough Treitel, and 1976). process, (CMP) in gather subsequent from reflection + ty = Ty to source,
Reflection: ty the of downward, axis at aimed a of as however, (Chapter Sequence the of More below. (Robinson al., et of Telford the midpoint gather CMP the in steps profile. A from time
Seismic Reflection Multiple appealing-aspect time the thus are representation wisely, profiles reflection descriptions and presented elsewhere In Gather common as comprise 5.9a processing seismic Analysis to: travel = T,
Chapter5 Primary Surface One with plotted processing steps abstract interpreted seismic Processing Objectives are found 1995; pp. 370-395 1. rearranged Fig. in bold the through stacked the 2. Velocity bola, according where:
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