DOI: 10.1306/12011414036
Scopus记录号: 2-s2.0-84948458975
论文题名: Early synrift reservoir development on the flanks of extensional forced folds: A seismic-scale outcrop analog from the Hadahid fault system, Suez rift, Egypt
作者: Lewis M.M. ; Jackson C.A.L. ; Gawthorpe R.L. ; Whipp P.S.
刊名: AAPG Bulletin
ISSN: 0149-1459
EISSN: 1558-9189
出版年: 2015
发表日期: 2015
卷: 99, 期: 6 起始页码: 985
结束页码: 1012
语种: 英语
Scopus关键词: Deposition
; Stratigraphy
; Clastic sediments
; Facies distribution
; Fluvial systems
; Reservoir development
; Sandstone reservoirs
; Seismic resolution
; Structural styles
; Uncertainty and risks
; Seismology
; alluvial deposit
; bypass
; facies
; fault zone
; mudstone
; outcrop
; reservoir
; rift zone
; uncertainty analysis
; Egypt
; Suez Rift
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Forced folds typically develop above the tips of propagating normal faults in rifts that contain thick, prerift salt or mudstone sequences. This structural style is associated with the deposition of wedge-shaped synrift deposits that thin and onlap toward monoclinal growth folds overlying the vertically restricted fault tips. Subtle stratigraphic traps may develop on the flanks of these folds although, because of limited seismic resolution and sparse well data, the architecture, thickness, and distribution of these early synrift reservoirs are difficult to predict. To improve our understanding of early synrift reservoir development on the flanks of forced folds, we focus on seismic-scale outcrop analogs along the Hadahid fault system, Suez rift, Egypt. Our data indicate that forced folding dominated during early rifting and that the onset of folding was diachronous along strike. Fluvial systems incised the rotating monocline limbs, leading to the formation of valley-like erosional relief along the base synrift unconformity. Reservoir-prone fluvial facies are only locally developed along the forced-fold flank, with their distribution related to the degree of sediment bypass downdip into the adjacent basin. Early synrift relief not filled by fluvial strata was backfilled by transgressive, tidally influenced, reservoir-prone facies, with carbonates being locally developed in areas of low clastic sediment supply. Further extension and fault-tip propagation led to amplification of the forced folds, and deposition of shallow marine-to-shelf parasequences that became thinner toward the growing folds. Although displaying greater strike continuity than the underlying fluvial or tidal reservoirs, shoreface sandstone reservoirs amalgamate onto the flanks of the forced folds and may be absent toward the fold crest. This seismic-scale outcrop analog helps us better understand the subseismic stratigraphie architecture and facies distributions of early synrift reservoirs on the flanks of extensional forced folds. Observations from this and other well-exposed outcrop analogs should help reduce subsurface uncertainty and risk when exploring for hitherto under-explored, subtle, early synrift stratigraphie traps. © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948458975&doi=10.1306%2f12011414036&partnerID=40&md5=e4342e011046392643c258534c6a0778
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13030
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Lewis M.M.,Jackson C.A.L.,Gawthorpe R.L.,et al. Early synrift reservoir development on the flanks of extensional forced folds: A seismic-scale outcrop analog from the Hadahid fault system, Suez rift, Egypt[J]. AAPG Bulletin,2015-01-01,99(6)