Agreement DE-FC26-02NT15342, Seismic Evaluation of ...

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Figure 56. Well log correlation of significant reservoir intervals connected across the Mars-Ursa intraslope basin. The right log in each well shows resistivity, the left log shows gamma. High gamma intervals represent the shale baseline, deviations from the baseline are sands. Low resistivity values indicate water saturated shale. High resistivies (deflection to right) indicate hydrocarbon presence, where red is gas, green oil saturated reservoir. The main reservoir intervals that were chosen for modeling are interval A Upper reservoir interval, Interval C Above Magenta reservoir interval and interval H the Lower Yellow interval. These were interpreted as levee overbank, amalgamated channel sand and sheet sands respectively. The main reason these three intervals were chosen is because they are representative of the three main architectural elements that can form reservoirs in deepwater settings. Agreement DE-FC26-02NT15342, Seismic Evaluation of Hydrocarbon Saturation 72
4 miles 1.5 s 2 s 3 s Hydrocarbon Interval Venus Salt Hydrocarbon Interval A B C F G H East Anteras Salt Data courtesy of TGS-NOPEC & Schlumberger RES 4 s 5 s 6 s Figure 57. Ursa seismic line 1041 shows major hydrocarbon intervals indicated by bright spots and the log intersection for Ursa 1 well. A and B correspond with Upper and Lower reservoirs intervals. C,F,G and H correspond with Above Magenta, Lime Green, and Upper and Lower Yellow reservoirs respectively (Hilterman, 2001). Shear wave prediction Agreement DE-FC26-02NT15342, Seismic Evaluation of Hydrocarbon Saturation 73
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June 29, 2006 Seismic Evaluation of
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Abstract: During this last quarter
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Ursa Data .........................
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Figures: Figure 1. Relationship of
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Figure 38. Schematic of geometry an
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Figure 73. The extracted wavelet an
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Executive Summary: In this joint pr
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Results and Discussion Introduction
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Inversion of Sw and porosity from s
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saturation from seismic data. Valid
Page 21 and 22: The Lagrange function (5) has a sad
Page 23 and 24: ρ ma − ρ + ( ρ w − ρ g ) ×
Page 25 and 26: With a water saturation log calcula
Page 27 and 28: Figure 11. permeability versus poro
Page 29 and 30: Figure 13. Measured dry and brine s
Page 31 and 32: Figure 15. The HP (deep) sands have
Page 33 and 34: pressure-porosity relations. The n
Page 35 and 36: Figure 19. measure dry and brine sa
Page 37 and 38: Relations between Sw, porosity, and
Page 39 and 40: Figure 21. An example realization o
Page 41 and 42: otherwise the seismic properties we
Page 43 and 44: correctly reproduce those found in
Page 45 and 46: study of field data from the Teal S
Page 47 and 48: Figure 30. Spectral decomposed pres
Page 49 and 50: (Adapted from CSM Slope and Basin C
Page 51 and 52: Figure 34. Sequence stratigraphic f
Page 53 and 54: Figure 36. Schematic depiction of c
Page 55 and 56: Figure 38. Schematic of geometry an
Page 57 and 58: Figure 40. Middle slope channel (Ad
Page 59 and 60: Figure 43. Amalgamated sandstone sh
Page 61 and 62: CHANNEL AXIS SINGLE STORY CHANNEL C
Page 63 and 64: MEDIAL LEVEE/OVERBANK 7.62 cm Figur
Page 65 and 66: L1054 L1041 • Ursa Well A4 Green=
Page 67 and 68: 1.9 miles 37 ft Fizz 19 ft Oil 4.0
Page 69 and 70: esults in shifts followed by subsid
Page 71: Figure 55. Schematic of depositiona
Page 75 and 76: In addition to comparing calculated
Page 77 and 78: Figure 61. Shear velocity trend for
Page 79 and 80: each reservoir interval modeled. Th
Page 81 and 82: Figure 65. Histograms of frequency
Page 83 and 84: the pressure trends were analyzed,
Page 85 and 86: P Impedance Model Synthetic 2 -D Mo
Page 87 and 88: Above Magenta reservoir model The A
Page 89 and 90: Figure 73. The extracted wavelet an
Page 91 and 92: saturation and 50% gas saturation.
Page 93 and 94: Figure 77. The amalgamated channel
Page 95 and 96: Figure 79. Channel complex model 2
Page 97 and 98: Figure 81. AVO stack and gathers fo
Page 99 and 100: Figure 82. Log signature includes g
Page 101 and 102: Figure 85. Extracted wavelet and mo
Page 103 and 104: Figure 87. Amalgamated sheet sand m
Page 105 and 106: Figure 89. Pseudo logs, wavelet, sy
Page 107 and 108: Figure 90. Medial basin floor chann
Page 109 and 110: Figure 92. Pseudo logs, wavelet, sy
Page 111 and 112: Figure 94. The post stack seismic e
Page 113 and 114: Figure 96. Statistically extracted
Page 115 and 116: Figure 98. The proximal levee overb
Page 117 and 118: Figure 99. The response of the prox
Page 119 and 120: Figure 101. The pseudo log, wavelet
Page 121 and 122: Figure 102. The distal levee overba
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Figure 104. The complex well log ba
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then scaled to the model data by mu
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Figure 107. The Ursa log displays g
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Figure 109. Composite reflection co
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Conclusions One of the main conclus
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Table 5 Summary of the model facies
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REFERENCES Alford, R. M., Kelly, K.
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Gardner, M. H., Anderson, D. A., Bo
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Mahaffie, M.J., 1994, Reservoir cla
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Rothman, D.H., Grotzinger, J.P., Fl
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Vail, P., 1977, Seismic Stratigraph
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downlap (Mtchum, 1977): A base-disc
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direction and downlap onto the tran
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Agreement DE-FC26-02NT15342, Seismi
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APPENDIX E: VALUES USED FOR RESERVO
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