A wavelet-analysis-based new approach for interference elimination in geochemical hydrocarbon exploration
文献类型：期刊论文
| 作者 | Zhang, LP; Bai, GP; Xu, YX |
| 刊名 | MATHEMATICAL GEOLOGY
 |
| 出版日期 | 2003-11-01 |
| 卷号 | 35期号:8页码:939-952 |
| 关键词 | conceptual model superimposition interference multiplication interference Mallat algorithm hydrocarbon indicator |
| ISSN号 | 0882-8121 |
| 文献子类 | Article |
| 英文摘要 | Guidance for petroleum prospecting is provided by authentic geochemical anomalies, obtained after interference has been eliminated in the original data from a geochemical survey for hydrocarbons. However, this elimination is a complicated process. Few working models or effective methods for interference elimination have been proposed, hampering a wider acceptance of geochemical prospecting as a viable tool for hydrocarbon exploration. This study focuses on the models for different types of interference and developing techniques for interference elimination. We first restudied the geometric nature of hydrocarbon anomalies and interference on the basis of Zhang, L., and Lia, Z. (J. China Univ. Geosci., v. 9, no. 1, p. 72-80, 1998). From this, we determined that at least two types of interference are present in the data of a surface geochemical survey for hydrocarbons. One is the superimposition type originating mainly from microorganisms and contamination, and the other is the multiplication type resulting from variations in soil mineral components. We then established digital conceptual models for both types of interference based on the geometry of anomalies and interference. Finally, we used wavelet analysis to eliminate both types of interference in the models for testing. As Morlet wavelet and symmetric border treatment fit the geometric characteristics of the anomalies and interference, they were used in this study. We found that pre-wavelet analysis treatment is different for different types of interference. For the multiplication type, log-transformation and normalization are needed before wavelet analysis whereas only normalization is needed for the superimposition type. In practice, one needs to identify the type of interference. Therefore, the criteria for determining the interference type were first established geochemically in this study. The newly developed techniques were then applied to the data of acid-extractable hydrocarbons of soils in the Eastern Anan Sag, Inner Mongolia where traditional techniques had failed to eliminate the interference in these data. Using our new techniques, we determined the interference was the multiplication type. This new approach enabled us to satisfactorily eliminate the interference in the original data. It should be noted that our study indicates that the multiplication type of interference is much more common and severe than previously thought. |
| WOS关键词 | ANOMALY SEPARATION ; SAMPLING THEORY ; PROPAGATION ; PETROLEUM |
| WOS研究方向 | Geology ; Mathematics |
| 语种 | 英语 |
| WOS记录号 | WOS:000188007100004 |
| 出版者 | KLUWER ACADEMIC/PLENUM PUBL |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/78459]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang, LP |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resource, Beijing 100029, Peoples R China 2.Univ Petr, Basin & Reservoir Res Ctr, Beijing 102249, Peoples R China 3.China Univ Geosci, Dept Geophys, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, LP,Bai, GP,Xu, YX. A wavelet-analysis-based new approach for interference elimination in geochemical hydrocarbon exploration[J]. MATHEMATICAL GEOLOGY,2003,35(8):939-952. |
| APA | Zhang, LP,Bai, GP,&Xu, YX.(2003).A wavelet-analysis-based new approach for interference elimination in geochemical hydrocarbon exploration.MATHEMATICAL GEOLOGY,35(8),939-952. |
| MLA | Zhang, LP,et al."A wavelet-analysis-based new approach for interference elimination in geochemical hydrocarbon exploration".MATHEMATICAL GEOLOGY 35.8(2003):939-952. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。