气候变化领域集成服务门户(CCPortal): Subseismic pathway prediction by three-dimensional structural restoration and strain analysis based on seismic interpretation

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DOI	10..1306/0130191516517255
	Subseismic pathway prediction by three-dimensional structural restoration and strain analysis based on seismic interpretation
	Ziesch J.; Tanner D.C.; Krawczyk C.M.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:10
英文摘要	For both modeling and management of a reservoir, pathways to and through the seal into the overburden are of vital importance. Therefore, we suggest applying the presented structuralmodeling workflow that analyzes internal strain, elongation, and paleogeomorphology of the given volume. It is assumed that the magnitude of strain is a proxy for the intensity of subseismic scale fracturing. Zones of high strain may correlate with potential migration pathways. Because of the enhanced need for securing near-surface layer integrity when CO2 storage is needed, an interpretation of three-dimensional (3-D) seismic data from the Cooperative Research Centre for Greenhouse Gas Technologies Otway site, Australia, was undertaken. The complete 3-D model was retrodeformed. Compaction-plus deformation-related strain was calculated for the whole volume. The strain distribution after 3-D restoration showed a tripartition of the study area, with the most deformation (30%-50%) in the southwest. Of 24 faults, 4 compartmentalize different zones of deformation. The paleomorphology of the seal formation is determined to tilt northward, presumably because of a much larger normal fault to the north. From horizontal extension analysis, it is evident that most deformation occurred before 66 Ma and stopped abruptly because of the production of oceanic crust in the SouthernOcean.Within the seal horizon, various high-strain zones and therefore subseismic pathways were determined. These zones range in width from 50 m (164 ft) up to 400 m (1312 ft) wide and do not simply follow fault traces, and-most importantly-none of them continue into the overburden. Such information is relevant for reservoir management and public communication and to safeguard near-surface ecologic assets. Copyright ©2019.
语种	英语
scopus关键词	Deformation; Digital storage; Greenhouse gases; Restoration; Sealing (finishing); Seismology; Cooperative research centres; Extension analysis; Near-surface layers; Public communications; Seismic interpretation; Strain distributions; Structural restorations; Three-dimensional (3-D) seismic data; Reservoir management; carbon dioxide; deformation mechanism; gas storage; magnitude; normal fault; oceanic crust; overburden; paleogeography; prediction; seismic data; seismic method; strain analysis; Australia
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/125043
作者单位	Leibniz Institute for Applied Geophysics, Hannover, Germany; State Authority for Mining, Energy and Geology, Hannover, Germany; Technical University of Berlin, Berlin, Germany; Research Centre for Geosciences (GFZ), Helmholtz Centre Potsdam, Potsdam, Germany
推荐引用方式 GB/T 7714	Ziesch J.,Tanner D.C.,Krawczyk C.M.. Subseismic pathway prediction by three-dimensional structural restoration and strain analysis based on seismic interpretation[J],2019,103(10).
APA	Ziesch J.,Tanner D.C.,&Krawczyk C.M..(2019).Subseismic pathway prediction by three-dimensional structural restoration and strain analysis based on seismic interpretation.AAPG Bulletin,103(10).
MLA	Ziesch J.,et al."Subseismic pathway prediction by three-dimensional structural restoration and strain analysis based on seismic interpretation".AAPG Bulletin 103.10(2019).