THE APPLICATION OF WAVELET ANALYSIS IN SEQUENCE STRATIGRAPHICSUBDIVISION OF THE YANCHANG FORMATION, ORDOS BASIN

LI Xiang-bo，GUO Yan-ru，LIU Hua-qing，WAN Yan-rong，LIN Wei-dong，LIAO Jian-bo，MA Yu

doi:10.11764/j.issn.1672-1926.2006.06.779

Natural Gas Geoscience >

2006 , Vol. 17 >Issue 6: 779 - 782

DOI: https://doi.org/10.11764/j.issn.1672-1926.2006.06.779

THE APPLICATION OF WAVELET ANALYSIS IN SEQUENCE STRATIGRAPHICSUBDIVISION OF THE YANCHANG FORMATION, ORDOS BASIN

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1.Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences,Lanzhou 730000,China;
2.Northwest Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Lanzhou 730020, China;
3.Graduate School of Chinese Academy of Sciences, Beijing 100039, China; 4.Eerduosi Branch, Institute of ResearchInstitute of Petroleum Exploration and Development, PetroChina, Beijing 100029, China

Received date: 2006-07-14

Revised date: 2006-09-04

Online published: 2006-12-10

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Abstract

The current application of wavelet analysis in sequence stratigraphie subdivision was presented. The applicability of the wavelet conversion of gamma ray curve in the sequence stratigraphic subdivision of the Yanchang formation was analyzed. Different cycle orders can be obtained through wavelet analysis of GR curve. The comparison between the results of third order sequence stratigraphy obtained from wavelet analysis of GR curve, ordinary lithostratigraphy, parasequence analysis, analysis of paleo lake water depth and base level changes （lake level）, and seismic analysis shows that D10 wavelet of GR curve is consistent with third order cycle and can be used as a evidence of sequence stratigraphy analysis. As for alluvial and turbidite succession, however, the D10 wavelet analysis is not sensitive and can not be used as criteria of the sequence stratigraphy analysis.

Key words： Yanchang formation; Wavelet analysis; Seciuence stratigraphy; Ordos basin.

Cite this article

LI Xiang-bo，GUO Yan-ru，LIU Hua-qing，WAN Yan-rong，LIN Wei-dong，LIAO Jian-bo，MA Yu . THE APPLICATION OF WAVELET ANALYSIS IN SEQUENCE STRATIGRAPHICSUBDIVISION OF THE YANCHANG FORMATION, ORDOS BASIN[J]. Natural Gas Geoscience, 2006 , 17(6) : 779 -782 . DOI: 10.11764/j.issn.1672-1926.2006.06.779

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