Applying principal component analysis to seismic attributes for interpretation of evaporite facies: Lower Triassic Jialingjiang Formation, Sichuan Basin, China

doi:10.1190/INT-2017-0004.1

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Applying principal component analysis to seismic attributes for interpretation of evaporite facies: Lower Triassic Jialingjiang Formation, Sichuan Basin, China
	Hu, Suyun 1; Zhao, Wenzhi 1; Xu, Zhaohui 1,2; Zeng, Hongliu 2; Fu, Qilong ; Jiang, Lei 2,3; Shi, Shuyuan 1; Wang, Zecheng 1; Liu, Wei 1
刊名	INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
	2017-11-01
卷号	5 期号:4 页码:T461-T475
ISSN号	2324-8858
DOI	10.1190/INT-2017-0004.1
文献子类	Article
英文摘要	In China and elsewhere, it is important to predict different lithologies and lithofacies for hydrocarbon exploration in a mixed evaporite-carbonate-siliciclastic system. The lower section of the second member of the Jialingjiang Formation (T1j2L) is mainly composed of anhydrite, dolostone, limestone, and siliciclastic rocks, providing a rare opportunity to reconstruct detailed facies in a 2500 km(2) 3D seismic survey with 31 wells. Wireline logs (sonic, density, and gamma ray) calibrated by core analysis are essential in distinguishing anhydrite, siliciclastics, and carbonates. Although different lithologies are characterized by different acoustic impedance (AI), with certain overlapping, it is still difficult to predict lithology by any single seismic attribute because of the limited seismic resolution in a thinly interbedded formation of multiple lithologies. In our study, principal component analysis (PCA) was applied to extract lithologic information from selected seismic attributes; the first two principal components were used to predict the content of anhydrite, siliciclastics, and carbonates. Content maps of anhydrite, siliciclastics, and carbonates - created by mixing the represented color - were used to reconstruct lithofacies of the T1j2L submember. It is quite difficult, even with the PCA approach, to uniquely resolve the three lithologies due to the overlapped AI and the limited resolution of the seismic data. However, the workflow that we evaluated dramatically improved the prediction accuracy of lithology and lithofacies. Facies transition during the deposition of the T1j2L submember in the study area was inferred from a paleo-uplift in the southwest to a restricted lagoon and then to an open marine setting in the northeast.
WOS关键词	NORWEGIAN BARENTS SEA ; CARBONATE RESERVOIRS ; FINNMARK PLATFORM ; REFLECTION DATA ; ARABIAN GULF ; GAS-FIELD ; STRATIGRAPHY ; ARCHITECTURE ; RESOLUTION ; SOUTHERN
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000412938100014
资助机构	Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, CNPC(UTA14-001294/15HT10500000010 ; 2016ZX05004 ; 2014-E32-01 ; 2016B-0401) ; Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, CNPC(UTA14-001294/15HT10500000010 ; 2016ZX05004 ; 2014-E32-01 ; 2016B-0401) ; Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, CNPC(UTA14-001294/15HT10500000010 ; 2016ZX05004 ; 2014-E32-01 ; 2016B-0401) ; Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, CNPC(UTA14-001294/15HT10500000010 ; 2016ZX05004 ; 2014-E32-01 ; 2016B-0401)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/61986]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Hu, Suyun
作者单位	1.PetroChina Res Inst Petr Explorat & Dev, Beijing, Peoples R China 2.Univ Texas Austin, Bur Econ Geol, Jackson Sch Geosci, Austin, TX USA 3.Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Hu, Suyun,Zhao, Wenzhi,Xu, Zhaohui,et al. Applying principal component analysis to seismic attributes for interpretation of evaporite facies: Lower Triassic Jialingjiang Formation, Sichuan Basin, China[J]. INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION,2017,5(4):T461-T475.
APA	Hu, Suyun.,Zhao, Wenzhi.,Xu, Zhaohui.,Zeng, Hongliu.,Fu, Qilong.,...&Liu, Wei.(2017).Applying principal component analysis to seismic attributes for interpretation of evaporite facies: Lower Triassic Jialingjiang Formation, Sichuan Basin, China.INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION,5(4),T461-T475.
MLA	Hu, Suyun,et al."Applying principal component analysis to seismic attributes for interpretation of evaporite facies: Lower Triassic Jialingjiang Formation, Sichuan Basin, China".INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION 5.4(2017):T461-T475.