DOI: 10.1306/05281413152
Scopus记录号: 2-s2.0-84904257575
论文题名: Constraining uncertainty in interpretation of seismically imaged clinoforms in deltaic reservoirs, Troll field, Norwegian North Sea: Insights from forward seismic models of outcrop analogs
作者: Holgate N.E. ; Hampson G.J. ; Jackson C.A.-L. ; Petersen S.A.
刊名: AAPG Bulletin
ISSN: 0149-1556
EISSN: 1558-9286
出版年: 2014
发表日期: 2014
卷: 98, 期: 12 起始页码: 2629
结束页码: 2663
语种: 英语
Scopus关键词: Acoustic impedance
; Acoustic properties
; Geometry
; Seismic response
; Seismic waves
; Uncertainty analysis
; Deltaic deposits
; Depositional environment
; Destructive interference
; Geometrical relationship
; Petrophysical datum
; Seismic reflection data
; Seismic wavelets
; Vertical resolution
; Seismology
; Cretaceous
; deltaic deposit
; depositional environment
; facilitation
; geometry
; hydrocarbon reservoir
; numerical model
; sedimentology
; seismic anisotropy
; seismic data
; uncertainty analysis
; wavelet analysis
; Atlantic Ocean
; North Sea
; Troll Field
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Forward seismic modeling of outcrop analogs has been used to characterize the seismic expression of clinoforms in different deltaic depositional environments, and thus constrain uncertainty in interpretation of intra-reservoir clinoforms imaged in seismic data from the Troll field, Norwegian North Sea. Three outcrop analogs from the Cretaceous Western Interior seaway, United States, were studied to quantify the geometry, distribution, and lithologic character of clinoforms in fluvial-dominated and mixed-influence deltaic deposits. Outcrop-derived geometric data were calibrated to sedimentological and petrophysical data from the Krossfjord and Fensfjord Formations in the Troll field, and then used to create a suite of forward seismic models for comparison with real seismic reflection data from the Troll field. Clinoforms were imaged in the forward seismic models in which they were (1) spaced wider than the tuning thickness (>10 m [>33 ft]); (2) marked by pronounced interfingering of facies associations with different acoustic properties; and/or (3) lined by relatively thick (>50 cm [>20 in.]) carbonate-cemented layers. However, where clinothems are thinner than the vertical resolution limit of seismic data, destructive interference occurred creating misleading geometrical relationships. Furthermore, our ability to image clinoforms is dependent on (1) the frequency of the seismic wavelet; (2) the overburden velocity; and/or (3) the acoustic impedance contrast at the boundary between the overburden and the clinoform-bearing target. The established methodology has allowed characterization of deltaic clinoformal architectures in reservoir seismic data from the Troll field, and has facilitated a more robust interpretation by bridging the critical gap in resolution between well and seismic data. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904257575&doi=10.1306%2f05281413152&partnerID=40&md5=f103dbd6fa52dbfd5b835041cbb9005d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13127
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:
Holgate N.E.,Hampson G.J.,Jackson C.A.-L.,et al. Constraining uncertainty in interpretation of seismically imaged clinoforms in deltaic reservoirs, Troll field, Norwegian North Sea: Insights from forward seismic models of outcrop analogs[J]. AAPG Bulletin,2014-01-01,98(12)