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Unravelling the Triassic Mungaroo Formation within North Carnarvon Basin using Regional Stratal Slice Volumes
| Content Provider | Semantic Scholar |
|---|---|
| Author | Marsh, Tony Kowalik, Bill Welch, R. Robinson Powell, Anne Howe, Hubert S. Hallager, Bill |
| Copyright Year | 2018 |
| Abstract | Chevron has developed a new method for viewing, rendering and interpreting multiple, proportionally-flattened seismic surveys (US patent). The products of this method are referred to as Regional Stratal Slice Volumes (RSSVs). Within the Northern Carnarvon Basin (NCB), local RSSVs contain a patchwork of 22 3D seismic surveys covering an area of approximately 68 000 km2 and comprising a 4+ km-thick succession of alluvial to shallow-marine deposits of the Late Triassic Mungaroo Formation. Seismic slices for each constituent volume were spliced together, correlated with adjacent volumes and combined with supporting structural, cultural and well-based data. This has created a temporal series of unbroken, regionally-extensive, seismic snapshots which, when viewed successively, capture the evolving geomorphology and palaeogeography of the basin from east of Gorgon and Wheatstone out to the Exmouth Plateau. Through the integration of the RSSVs and well data, the shoreline and marginal marine to non-marine transitions were identified and accurately mapped at an approximately 20 m vertical spacing throughout the Mungaroo Formation. This work resulted in an in-depth understanding of changing depositional environments at a regional scale. Observed, temporally-systematic fluctuations of the shoreline on the RSSVs provide a highly predictive stratigraphic framework for the basin. Additionally, RSSVs have been used to provide insight into regional NCB studies and to support localised prospect and field scale evaluations. Over the past three years, RSSVs combined with automatically generated closures have been used to identify significant additions to Chevron’s prospect portfolio. |
| Starting Page | 833 |
| Ending Page | 838 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| Volume Number | 58 |
| Alternate Webpage(s) | https://www.publish.csiro.au/aj/pdf/AJ17232 |
| Alternate Webpage(s) | https://doi.org/10.1071/AJ17232 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |