Seismic Singularity Attribute and Its Applications in Hydrocarbon Detection
详细信息
- 责任者：Cao Xiangyang (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100101 ; China) ; Chang Xu
- 刊名：Petroleum Exploration and Development
- 出版年：2010
- 卷期：37(3)
- 关键词：地震属性 ; seismic attributes ; 油气勘探 ; petroleum exploration ; 四川盆地 ; Sichuan Basin
- 页码：p.325-329
- 图表：4 illus., 19 refs.
- 分类号：1600
- issnNo：ISSN1000-0747
- isbnNo：CN11-2360/TE
摘要
The onset function is introduced to extend the traditional formation conversion model, and the singularity data is used to quantify the transit characteristics of the formation velocity. Moreover, the traditional convolution model is used to identify the transmission of the singularity data from acoustic impedance to composite seismogram. The singularity characteristics of formation medium are preserved in the seismogram and they can be considered as a natural seismic attribute that can delineate the formation boundaries accurately. With the mono-scale fractional-order Gaussian wavelet transformation algorithm, the wavelet transform modulus maximum points are traced by taking the disappearance or appearance of the maximum as the criterion for singularity index calculation.