Quantitative analysis of basin-scale heterogeneities using sonic-log data in the Yanchang Basin

doi:10.1088/1742-2132/7/1/004

	Quantitative analysis of basin-scale heterogeneities using sonic-log data in the Yanchang Basin
	Wu, He-Zhen 1; Fu, Li-Yun 2; Ge, Hong-Kui 1
刊名	JOURNAL OF GEOPHYSICS AND ENGINEERING
	2010-03-11
卷号	7 期号:1 页码:41-50
关键词	reservoir heterogeneities random media correlation length fluctuation standard deviation correlation distance RMS height
ISSN号	1742-2132
DOI	10.1088/1742-2132/7/1/004
文献子类	Article
英文摘要	A random medium is used to investigate reservoir heterogeneities in this study. Random media are characterized by autocorrelation functions that allow a construction of spatially anisotropic random structures with different correlation lengths and fluctuation standard deviations. Based on the analysis, we calculate a power spectrum using fast Fourier transform (FFT), which is observed in spatial wavelengths ranging from a few metres to a few thousand metres. Correlation distance and root mean square (RMS) height are directly obtained from the power spectrum. Numerical experiments show that the correlation length and fluctuation standard deviation can cause correlation distance and RMS height undergoing variations. Combining the characteristics of statistical parameters and sonic-log data, we quantitatively analyse the reservoir heterogeneities in the Yanchang Basin. The correlation distance and RMS height of coarse lithofacies in fluvial sandstones interpret a high-energy deposit and strong heterogeneity, affected by different lithological combinations. The correlation lengths decrease gradually from shales, tight sands to gas-bearing sands. Using the sonic-log data from 28 wells in the Yanchang Basin, we compute the isolines of correlation distances and RMS heights for both the He-8 and Shan-1 members in the studied area, which present a correlation with the distribution of gas. This offers an improved foundation for reservoir lateral prediction.
WOS关键词	SEISMIC-WAVE SCATTERING ; 2-D RANDOM-MEDIA ; CRUST ; PROPAGATION ; VELOCITY ; WELL
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000274411100004
资助机构	National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; Central Level, Scientific Research Institutes(DQJB09A01) ; Central Level, Scientific Research Institutes(DQJB09A01) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; Central Level, Scientific Research Institutes(DQJB09A01) ; Central Level, Scientific Research Institutes(DQJB09A01) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; Central Level, Scientific Research Institutes(DQJB09A01) ; Central Level, Scientific Research Institutes(DQJB09A01) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; National High Technology Research and Development Program (863 Program) of China(2006AA06Z240) ; Central Level, Scientific Research Institutes(DQJB09A01) ; Central Level, Scientific Research Institutes(DQJB09A01)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/72290]
专题	中国科学院地质与地球物理研究所
通讯作者	Wu, He-Zhen
作者单位	1.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earths Deep Interior, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wu, He-Zhen,Fu, Li-Yun,Ge, Hong-Kui. Quantitative analysis of basin-scale heterogeneities using sonic-log data in the Yanchang Basin[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2010,7(1):41-50.
APA	Wu, He-Zhen,Fu, Li-Yun,&Ge, Hong-Kui.(2010).Quantitative analysis of basin-scale heterogeneities using sonic-log data in the Yanchang Basin.JOURNAL OF GEOPHYSICS AND ENGINEERING,7(1),41-50.
MLA	Wu, He-Zhen,et al."Quantitative analysis of basin-scale heterogeneities using sonic-log data in the Yanchang Basin".JOURNAL OF GEOPHYSICS AND ENGINEERING 7.1(2010):41-50.