气候变化领域集成服务门户(CCPortal): Static connectivity of stacked deep-water channel elements constrained by high-resolution digital outcrop models

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DOI	10.1306/03061917346
	Static connectivity of stacked deep-water channel elements constrained by high-resolution digital outcrop models
	Jackson A.; Jackson A.; Stright L.; Hubbard S.M.; Romans B.W.
发表日期	2019
ISSN	0149-1423
起始页码	2943
结束页码	2973
卷号	103 期号:12
英文摘要	High-resolution digital outcrop models of stacked deep-water channel elements are constructed from the Laguna Figueroa section of the well-exposed Upper Cretaceous Tres Pasos Formation in Chilean Patagonia. The models are based on greater than 1600 m (>5250 ft) of centimeter-scale measured sections, greater than 100 paleoflow measurements, and thousands of differential global positioning systempoints (10-cm [4-in.] accuracy) froman outcrop belt that is approximately 2.5 km (~1.5 mi) long and 130 m (425 ft) thick. The models elucidate the effects bed-togeobody-scale architecture has on static sandstone connectivity among a series of stacked deep-water channel elements and how that connectivity is altered by grid cell size. Static connectivity analyses show that channel element base drapes can strongly influence sandstone connectivity and that smaller channel element widths are more likely to produce disconnected sandstone geobodies. Net-to-gross (NTG) is not directly correlated with connectivity because of the presence of thin channel element base drapes, which do not significantly contribute to NTG. Upscaling the models consistently inc,reases channel element contact (up to 10%) but decreases sandstone connectivity (up to 2%-3%). Channel element stacking patterns strongly impact connectivity. For example, connectivity is reduced in cases of high lateral channel element offsets. Increasing drape coverage markedly decreases connectivity. Evaluating connectivity in a vertical, along-systemprofile is critical to understanding flow units and reservoir piping. Ultimately, this work constrains uncertainty related to the impact of subseismic-scale stratigraphic architecture on reservoir connectivity by providing concrete knowledge that can be used to guide the model building process. © 2019 The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Sandstone; Stratigraphy; Building process; Channel Elements; Connectivity analysis; Deep-water channels; Global positioning; Reservoir connectivities; Stacking patterns; Stratigraphic architecture; Reservoirs (water); channel flow; connectivity; deep water; digital terrain model; GPS; measurement method; outcrop; piping; sandstone; Chile; Patagonia
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/143746
作者单位	Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States; Independent consultant, Durango, CO, United States; Department of Geosciences, Colorado State University, Fort Collins, CO, United States; Department of Geoscience, University of Calgary, Calgary, AB, Canada; Department of Geosciences, Virginia Tech, Blacksburg, VA, United States
推荐引用方式 GB/T 7714	Jackson A.,Jackson A.,Stright L.,et al. Static connectivity of stacked deep-water channel elements constrained by high-resolution digital outcrop models[J],2019,103(12).
APA	Jackson A.,Jackson A.,Stright L.,Hubbard S.M.,&Romans B.W..(2019).Static connectivity of stacked deep-water channel elements constrained by high-resolution digital outcrop models.AAPG Bulletin,103(12).
MLA	Jackson A.,et al."Static connectivity of stacked deep-water channel elements constrained by high-resolution digital outcrop models".AAPG Bulletin 103.12(2019).