摘要
利用地震资料识别断层或裂缝发育带等非连续性异常信息是裂缝性油气藏储层预测的关键所在。为此,提出了一种基于多尺度加窗希尔伯特变换的体边缘检测新方法。在二维(水平)加窗希尔伯特变换的基础上,考虑了非连续性地质异常的多尺度三维特征,通过同时调节水平和深度方向上的计算孔径来提取实际三维地质异常体的边缘信息,弥补了二维加窗希尔伯特变换仅提取水平方向边缘信息的明显不足。实际地震资料体边缘检测试处理结果表明,该方法能够完整地刻画多尺度非连续性地质异常体的特征,有效突出裂缝发育带的边缘位置及断层的走向,具有较为显著的实用价值。
The identification of discontinuity abnormal information in seismic data,such as the seismic responses from faults or fracture zone,is crucial to fractured oil-gas reservoir prediction.Therefore,we proposed a new 3Dedge detection method based on multi-scale windowed Hilbert transform.It is based on 2D（horizontal）windowed Hilbert transform,considering the characteristics of 3D multi-scale for discontinuous geological anomalies.The edge information of 3Dgeological anomalies is calculated by simultaneously adjusting the aperture in the horizontal and depth direction,thus overcame the obvious inadequacy of edge information extracting only in the spatial direction for 2D（horizontal）windowed Hilbert transform.Trial processing results of the actual seismic data for 3Dedge detection show that the method can completely describe the characteristics of multi-scale discontinuous geological anomalies,effectively reveal the location and direction of fractures developed zone and faults with more significant practical value.
出处
《石油物探》
EI
CSCD
北大核心
2015年第3期345-349,共5页
Geophysical Prospecting For Petroleum
基金
国家自然科学基金项目(41374134
41174114)
四川省杰出青年科学基金(2013JQ0011)
国家科技重大专项项目(2011ZX05023-005-010)联合资助
关键词
体边缘检测
广义希尔伯特变换
多尺度特征
水平孔径
深度孔径
3D edge detection
generalized Hilbert transform
multi-scale features
horizontal space aperture
depth aperture
