globalchange  > 过去全球变化的重建
DOI: 10.1306/08071313039
Scopus记录号: 2-s2.0-84898066022
论文题名:
Athabasca oil sands: Megatrap restoration and charge timing
作者: Tozer R.S.J.; Choi A.P.; Pietras J.T.; Tanasichuk D.J.
刊名: AAPG Bulletin
ISSN: 0149-1562
EISSN: 1558-9292
出版年: 2014
发表日期: 2014
卷: 98, 期:3
起始页码: 429
结束页码: 447
语种: 英语
Scopus关键词: Oil sands ; Restoration ; Athabasca oil sands ; Basement rocks ; Canadian shields ; Charge models ; Flexural loading ; Late cretaceous ; Maximum amplitude ; Western canada sedimentary basins ; Bituminous materials ; anticline ; Cretaceous ; kimberlite ; oil sand ; outcrop ; overburden ; Paleocene ; Santonian ; sedimentary basin ; Alberta ; Athabasca Oil Sands ; Canada ; Canadian Shield ; Western Canada Sedimentary Basin
Scopus学科分类: Energy ; Earth and Planetary Sciences
英文摘要: The petroleum trap for the Athabasca oil sands has remained elusive because it was destroyed by flexural loading of the Western Canada Sedimentary Basin during the Late Cretaceous and Paleocene. The original trap extent is preserved because the oil was biodegraded to immobile bitumen as the trap was being charged during the Late Cretaceous. Using well and outcrop data, it is possible to reconstruct the Cretaceous overburden horizons beyond the limit of present-day erosion. Sequential restoration of the reconstructed horizons reveals a megatrap at the top of the Wabiskaw-McMurray reservoir in the Athabasca area at 84 Ma (late Santonian). The megatrap is a four-way anticline with dimensions 285 x 125 km (177x78 mi) and maximum amplitude of60m(197ft). The southeastern margin of the anticline shows good conformance to the bitumen edge for 140 km (87 mi). To the northeast of the anticline, bitumen is present in a shallower trap domain in what is interpreted to be an onlap trap onto the Canadian Shield; leakage along the onlap edge is indicated by tarry bitumen outliers preserved in basement rocks farther to the northeast. Peripheral trap domains that lie below the paleospillpoint, in northern, southern, and southwestern Athabasca, and Wabasca, are interpreted to represent a late charge of oil that was trapped by bitumen already emplaced in the anticline and the northeastern onlap trap. This is consistent with kimberlite intrusions containing live bitumen, which indicate that the northern trap domain was charged not before 78 Ma. The trap restoration has been tested using bitumen-water contact well picks. The restored picks fall into groups that are consistent both with the trap domains determined from the top reservoir restoration and the conceptual charge model in which the four-way anticline was filled first, followed by the northeastern onlap trap, and then the peripheral trap domains. © 2014. The American Association of Petroleum Geologists. All rights reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898066022&doi=10.1306%2f08071313039&partnerID=40&md5=1c052c865385ee548e82f2334a4a48ba
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13133
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

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Tozer R.S.J.,Choi A.P.,Pietras J.T.,et al. Athabasca oil sands: Megatrap restoration and charge timing[J]. AAPG Bulletin,2014-01-01,98(3)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Tozer R.S.J.]'s Articles
[Choi A.P.]'s Articles
[Pietras J.T.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Tozer R.S.J.]'s Articles
[Choi A.P.]'s Articles
[Pietras J.T.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Tozer R.S.J.]‘s Articles
[Choi A.P.]‘s Articles
[Pietras J.T.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.