A Deterministic Evaluation of eismic Fidelity using Velocity Modeling ...

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Faults Figure 51. Depth slice from velocity model showing details such as faults appear in the sediment velocity model. 88
Velocity in ft/sec Figure 52. Prestack time migrated velocity cube of linearly extrapolated seismic velocities. Velocity in ft/sec Figure 53. Smoothed prestack time migrated velocity cube used to PSDM data for comparison with PSDM from the well-based velocity model. 89
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Chapter 1 Introduction 1.1 Summary
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1.2.1 Geology Vinton Dome is a pier
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layer in land data that in extreme
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logs as being an effective approach
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Chapter 2 Geology of Vinton Dome 2.
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The Gulf of Mexico Basin contains U
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developed from repetitive episodes
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of the upper Frio. Overlying the lo
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structures form by the differential
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Dividing the Gulf of Mexico Basin i
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2.6 Geologic Modeling Historically,
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2.6.1 Vinton Geology Analysis of se
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surface and a number of small subma
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established the Mississippi delta a
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Figure 2. Outline of the extents of
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Figure 6. Salt sediment contacts us
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Figure 10. Fault pattern representa
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Figure 14. Stratigraphic column of
Page 37 and 38: Top Hackberry Sand Hackberry Base N
Page 39 and 40: Figure 18. Structure map contoured
Page 41 and 42: Gyroidina scalata Outer shelf Gyroi
Page 43 and 44: Upper Frio Sands A Sand base B Sand
Page 45 and 46: Top Anahuac Middle Shelf Heterosteg
Page 47 and 48: Miocene sands Figure 27. Spontaneou
Page 49 and 50: Vinton Dome Figure 30. Late Miocene
Page 51 and 52: 3.1 Introduction Chapter 3 Processi
Page 53 and 54: 3.3 Processing My primary objective
Page 55 and 56: 38-42). For QC I would brute stack
Page 57 and 58: Another significant issue was to id
Page 59 and 60: Table 2 Final processing flow Input
Page 61 and 62: Number of stacked traces 12.5km 12.
Page 63 and 64: TWT seconds a 12.5km TWT seconds b
Page 65 and 66: TWT seconds 12.5km Figure 38. Brute
Page 71 and 72: Chapter 4 Velocity Modeling and Pre
Page 73 and 74: quality motivated a reassessment of
Page 75 and 76: The layer-based approach is much mo
Page 77 and 78: of seismically derived velocities.
Page 79 and 80: To test differences between seismic
Page 81 and 82: ased data, indicating higher fideli
Page 83 and 84: 4.5 Conclusions and Discussion I co
Page 85 and 86: By using sonic logs the velocities
Page 87: Figure 50. Velocity cube of the sed
Page 91 and 92: Depth in kilo-feet a. b. Figure 56.
Page 93 and 94: Figure 59. Graphic user interface s
Page 95 and 96: Truncation of sediment onto salt a
Page 97 and 98: s 1 s 1 S e C 0 1 O W 34 M M 0 C a
Page 99 and 100: Prestack time migrated velocity mod
Page 101 and 102: Salt on PSTM Prestack time migrated
Page 103 and 104: Time in seconds Bright spot 12.5km
Page 105 and 106: PSTM prestack time well-based migra
Page 107 and 108: attributes also provided me with an
Page 109 and 110: types of coherence. The first type
Page 111 and 112: comparisons, those at the same dept
Page 113 and 114: Identifying reduced fidelity in the
Page 115 and 116: Faults Channel Figure 72. PSTM cohe
Page 117 and 118: Depth slice of coherence cube from
Page 119 and 120: Compartmentalized faults 5895 feet
Page 121 and 122: Well-based PSDM - faults traced fro
Page 123 and 124: Channel Radial faults 3985 feet a C
Page 125 and 126: Well-based PSDM Prestack time migra
Page 127 and 128: Well-based PSDM Faults imaged with
Page 129 and 130: structure and they must complement
Page 131 and 132: Imaged poorly was a fault identifie
Page 133 and 134: interpretation of the high angle gr
Page 135 and 136: Inline 1391 well-based PSDM Inline
Page 137 and 138: Figure 83. Interpretation showing t
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Channel nnen a Channel b Figure 85.
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yet there are several issues regard
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7.2.3 Attributes I used attributes
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seismic data provided a more detail
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educed the noise in the field data
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PSDM data to evaluate velocity mode
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10, Society of Exploration Geophysi
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Marfurt, K. J., Kirlin, R. L., Farm
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