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Queensland Australia. Environmental Geosciences Journal Special Issue, American Association of Petroleum Geologists. Spero, C., 2005. Oxy-Fuel Technology Update on the Callide A Retrofit feasibility study. Australian Journal of Mining conference, Geosequestration in Australia 3-4 th March, Melbourne, Australia, 2005. Sunshine Gas, 2005. Australian Stock Exchange Announcement April 7, 2005. http://www.sunshinegas.com.au/inv_asx.php?q=2&y=2005. 38
6. Southwest Bowen Basin Study Area - Wunger Ridge Flank 6.1. Seismic Interpretation 6.1.1. Previous Work and Structural Framework A regional interpretation of the Bowen Basin was carried out in the 1990’s by the then Bureau of Mineral Resources, now Geoscience Australia, in conjunction with what is now the Queensland Department of Natural Resources, Mines and Energy (QDNRME). The interpretation used regional seismic lines tied to a regional array of wells as well as deep crustal transects. Significantly more seismic data existed locally within the Wunger Ridge flank study area than were utilised in the regional studies, so that fault trends and maps of individual horizons interpreted by the Bureau of Mineral Resources (data and interpretation available from Geoscience Australia) were considered too generalised for the purpose of this study. All available seismic data within the Wunger Ridge flank study area (Figure 2.2c) were thus used so as to produce a more detailed interpretation. This section presents interpretive results: detailed geophysical reviews are summarised in (Appendix 10.6.6.). Previous regional interpretations included those carried out at a sequence stratigraphy level (Brakel et al., in press); deep crustal transect level (Korsch et al., 1992) and at a regional structural and exploration level (Korsch et al., 1998; Shaw et al., 1999). Key tectono-history summaries contained in the above references, and pertinent to the study area, are summarised below. • A late Carboniferous to Early Permian extensional or rift phase is recognised in the Bowen Basin from the presence of large-scale half grabens and associated extrusion of volcanic rocks (Korsch et al., 1992). Large scale faults imaged on deep crustal transects were not observed on the shallow seismic data used in this study. • During the Permian, the rift phase and subsequent thermal subsidence phase switched to a compressional regime associated with east-to-west thrust belts. These thrusts were imaged on deep crustal transects and observed in outcrop geology (Korsch et al., 1992). Foreland loading from the east during the late Permian to mid Triassic produced significant downwarping of the Taroom Trough (Figure 3.5): the Trough received significant sedimentation from the east resulting in the deposition of the Rewan Formation. It is interpreted that downwarping of the Taroom Trough in the east may have caused some degree of flexure in the west, probably resulting in relatively low accommodation space in the west Bowen Basin. • The final Bowen Basin phase in the mid–late Triassic was one of uplift and erosion, forming the unconformable boundary between the Bowen and the overlying Surat Basin. 6.1.2. Time Interpretation Seismic horizons Six seismic horizons were interpreted within the study area, and an additional two horizons were phantomed (copied from an already interpreted horizon and shifted in time (Table 6.1). For example, the Showgrounds Sandstone was phantomed down from the Snake Creek Mudstone due to the thin interval that prevented the resolution of both horizons within acceptable accuracy on printed sections. The Rewan Formation was also phantomed through an unconformity down from the Snake Creek Mudstone for similar reasons, so that intervals are of constant thickness with the exception of near the zero edges where both the Showgrounds Sandstone and Rewan Formation were adjusted. Figure 6.1 shows typical horizons interpreted on different vintages of data, where different seismic processing flows used resulted in non-uniformity of seismic character; itself leading to difficulties in tying different vintages of data. 39
Page 1: Site Specific Studies for Geologica
Page 4 and 5: Cooperative Research Centre for Gre
Page 6 and 7: 5.7. Chapter References ...........
Page 8 and 9: Tables Table 2.1. Physical properti
Page 10 and 11: Figure 6.19. Photograph of Harbour-
Page 13 and 14: Executive Summary The GEODISC progr
Page 15 and 16: 1. Introduction Significant debate
Page 17 and 18: 2. Geographical and Industrial Sett
Page 19 and 20: Figure 2.2. Close-up images of stud
Page 21 and 22: 10000 1000 AOI for carbon dioxide i
Page 23 and 24: l l 145° 150° l Moranbah Long rea
Page 25 and 26: Table 3.1. Summary of the key risk
Page 27 and 28: 3.1.11. Lakefield Basin. The Lakefi
Page 29 and 30: GEODISC concluded that the Drummond
Page 31 and 32: The Denison Trough is a western ext
Page 33 and 34: Figure 3.5. Structure of the Deniso
Page 35 and 36: Figure 3.7.Schematic geological cro
Page 37 and 38: • A comprehensive set of wells an
Page 39 and 40: sandstone of the Bundamba Group, Cl
Page 41 and 42: Figure 4.1. Location of all wells u
Page 43 and 44: 5. Bowen Basin Summary Reviews 5.1.
Page 45 and 46: 5.4. Southeast Bowen Basin Study Ar
Page 47 and 48: 5.4.2. Seismic Data Seven horizons
Page 49: 5.6. Northeast Bowen Basin Study Ar
Page 53 and 54: Basement (BASE) The BASE horizon is
Page 55 and 56: 6.1.4. Mapping Time structure, dept
Page 57 and 58: Figure 6.1. Seismic sections across
Page 59 and 60: 0 TWT ~ Depth (SRD = 244m) TWT (ms)
Page 61 and 62: Figure 6.7. BANDANNA-to-SHOWGROUNDS
Page 63 and 64: Maps and Basin Fill The Basement to
Page 65 and 66: Showgrounds Sandstone/Snake Creek M
Page 67 and 68: Using this method there is a potent
Page 69 and 70: 6.3.4. X-ray Diffractometry X-ray D
Page 71 and 72: and permeability are sedimentary fa
Page 73 and 74: Cores from wells located on the Wun
Page 75 and 76: Many of the wells in the central pa
Page 77 and 78: Figure 6.24. Core description of th
Page 79 and 80: oreholes. Depositional processes in
Page 81 and 82: Figure 6.30. Photograph of Rednook-
Page 83 and 84: Figure 6.32. Relative palaeo-water
Page 85 and 86: associated with the increase in tot
Page 87 and 88: The interpretation of multiple chan
Page 89 and 90: Beyond the meandering system, a del
Page 91 and 92: c) 148°00' 148*20' 148°40' 27°20
Page 93 and 94: The ductility and compressibility o
Page 95 and 96: 148:30 149:00 149:30 N Depth toTop
Page 97 and 98: The only recent well with reasonabl
Page 99 and 100: Rewan Formation- Showgrounds Sandst
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For a simplified model, as used in
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Table 6.5. Reservoir properties. Pr
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6.7.4. Simulation Results Prelimina
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• it is difficult to quantify the
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Brakel et al., (in press), In Korsc
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7. Summary and Implications - South
Page 113 and 114:
8. Recommendations- Southeast Queen
Page 115 and 116:
9. Acknowledgements The project gro
Page 117 and 118:
List of authors Note: (main authors
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