气候变化领域集成服务门户(CCPortal): Controls on fracture network characteristics of the middle member of the Bakken Formation; Elm Coulee field; Williston Basin; United States

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DOI	10.1306/07151917392
	Controls on fracture network characteristics of the middle member of the Bakken Formation; Elm Coulee field; Williston Basin; United States
	Khatri S.; Burberry C.M.
发表日期	2020
ISSN	0149-1423
起始页码	767
结束页码	793
卷号	104 期号:4
英文摘要	Although most of the production from the Bakken Formation in the Elm Coulee field of the Williston Basin is interpreted to come from matrix permeability, plots of reservoir performance indicators, such as estimated ultimate recovery (EUR), show areas of anomalously high production believed to be caused by secondary (fracture) permeability. Recent studies have alluded to basement tectonics controlling the structure of the overlying sedimentary cover and thus the reservoir performance in the Elm Coulee field, but the exact controlling mechanism has not been demonstrated. This paper describes an antiformal structure overlying a zone of deformation in a seismic data set. The zone of deformation consists of small vertical offset faults displaying evidence of wrench faulting and involves the Bakken petroleum system and deeper units. An analog model is used to guide interpolation and extrapolation of the faults when they are traced through the data cube. With the help of analog models, it is established that the antiformal structure and the associated deformation zone evolved over a stepover in a northwestsoutheast-oriented left-lateral-strike-slip system in the rigid basement. This strike-slip system may be secondary to the regional left-lateral Brockton-Froid fault zone, which lies to the north of the study area. The fracture network in the Elm Coulee field is likely to be enhanced around such antiformal structures, providing a plausible explanation for the locations of the EUR sweet spots. Thus, it is proposed that locating such deformation zones forms a potential new exploration trend in this field. © 2020 The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Buildings; Deformation; Fracture; Petroleum prospecting; Petroleum reservoir engineering; Secondary recovery; Seismology; Controlling mechanism; Estimated ultimate recoveries; Fracture network; Matrix permeability; Petroleum systems; Reservoir performance; Sedimentary covers; Strike slip systems; Strike-slip faults; analog model; basement rock; deformation; estimation method; fault zone; faulting; fracture network; hydrocarbon exploration; hydrocarbon generation; hydrocarbon reservoir; permeability; strike-slip fault; Coulee; United States; Williston Basin; Wisconsin; Ulmus
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/143708
作者单位	Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
推荐引用方式 GB/T 7714	Khatri S.,Burberry C.M.. Controls on fracture network characteristics of the middle member of the Bakken Formation; Elm Coulee field; Williston Basin; United States[J],2020,104(4).
APA	Khatri S.,&Burberry C.M..(2020).Controls on fracture network characteristics of the middle member of the Bakken Formation; Elm Coulee field; Williston Basin; United States.AAPG Bulletin,104(4).
MLA	Khatri S.,et al."Controls on fracture network characteristics of the middle member of the Bakken Formation; Elm Coulee field; Williston Basin; United States".AAPG Bulletin 104.4(2020).