Application of Seismic Waveform Analysis Technology in Studying Sedimentary Microfacies of Xinchang Region in West Sichuan, China
详细信息
- 责任者：Wu Xinhe (The Centre of Oil and Gas Survey ; CGS ; Beijing 100029 ; China) ; Lin Liangbiao
- 刊名：Journal of Chengdu University of Technology
- 出版年：2013
- 卷期：40(4)
- 关键词：砂体 ; sand bodies ; 沉积微相 ; sedimentary microfacies ; 波群速度 ; group velocity ; 四川 ; Sichuan Province
- 页码：p.409-416
- 图表：8 illus., 18 refs.
- 分类号：1600
- issnNo：ISSN1671-9727
- isbnNo：CN51-1634/N
摘要
In the seismic sedimentology studies,there are still absence of effective technical means to depict the nature and anisotropy of geologic bodies.Based on the characteristics of fast changing sedimentary facies and strong heterogeneity of Upper Triassic Xujiahe Formation(T3x) in West Sichuan,taking the seismic sedimentology as the main idea,and using seismic forward modeling technology and well-seismic calibration,this paper establishes a seismic waveform recognition mode of different sedimentary microfacies in T3x4-9 sand layer.The comparison and analysis of different seismic attributes and the verification of drilling wells reflect that the high-order statistics analysis is more sensitive to seismic reflection waveform change and can depict the nature of sand bodies.The skewness attribute can effectively reflect the seismic waveform changes of the different sedimentary microfacies.Then,one can depict and predict the superimposed river course favorable for T3x4-9 sand conglomerate reservoir development.
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