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DOI | 10.1306/02251917408 |
A review of producing fields inferred to have upslope stratigraphically trapped turbidite reservoirs: Trapping styles (pure and combined), pinch-out formation, and depositional setting | |
Amy L.A.; Amy L.A. | |
发表日期 | 2019 |
ISSN | 0149-1423 |
起始页码 | 2861 |
结束页码 | 2889 |
卷号 | 103期号:12 |
英文摘要 | Siliciclastic turbidite systems that pinch out updip toward their proximal margin are prime targets for hydrocarbon exploration, especially in deep-water basins. Such "upslope stratigraphic traps"potentially offer large-volume discoveries but have significant geological risks, notably because of ineffective closure or containment. In the published literature, at least 20 fields from 11 basins globally with 6-7 billion BOE of cumulative discovered reserves have been inferred to be reliant on upslope pinchout traps. These fields are reviewed in terms of their interpreted trapping styles, pinch-out formation process, and depositionaltectonic setting. Reservoirs display a range of upslope trapping styles, including pure (depositional and erosional) stratigraphic pinch-outs and combined stratigraphic-structural traps. In one-third of cases, faulting appears intimately linked to updip trapping, either through offsetting slope feeder conduits or assisting pinch-out development, and in some cases, faulting may be the most important updip trapping element. Sediment bypass and erosion in proximal areas is the most common inferred pinch-out formation mechanism. Some reservoirs also demonstrate the ability of erosional truncation by mud-prone channels and mass transport deposits to form viable stratigraphic traps and seals. Encouragingly for exploration, robust pinchout traps occur in various tectonic settings on a variety of different slope types and positions along the slope profile.Most large-volume discoveries to date, however, are restricted to the toe-of-slope environment in graded passive margins or out-of-grade rift and transform margin settings. Insights into the nature and occurrence of upslope stratigraphic traps are important for future exploration, especially for evaluating new license areas and risking prospects. © 2019 The American Association of Petroleum Geologists. All rights reserved. |
关键词 | DepositionErosionFaultingPetroleum prospectingDepositional settingFormation mechanismHydrocarbon explorationMass transport depositSiliciclastic turbiditesSlope environmentsTectonic settingsTurbidite reservoirsStratigraphydeep waterdepositional environmenterosionfaultingfield methodhydrocarbon explorationhydrocarbon generationhydrocarbon reservoiroil fieldsiliciclastic deposittrappingturbidite |
语种 | 英语 |
来源机构 | AAPG Bulletin |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/131694 |
推荐引用方式 GB/T 7714 | Amy L.A.,Amy L.A.. A review of producing fields inferred to have upslope stratigraphically trapped turbidite reservoirs: Trapping styles (pure and combined), pinch-out formation, and depositional setting[J]. AAPG Bulletin,2019,103(12). |
APA | Amy L.A.,&Amy L.A..(2019).A review of producing fields inferred to have upslope stratigraphically trapped turbidite reservoirs: Trapping styles (pure and combined), pinch-out formation, and depositional setting.,103(12). |
MLA | Amy L.A.,et al."A review of producing fields inferred to have upslope stratigraphically trapped turbidite reservoirs: Trapping styles (pure and combined), pinch-out formation, and depositional setting".103.12(2019). |
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