摘要：The deep exploration has become the focus of attention in the field of earth sciences. Coherence is a routine measure to identify structural and stratigraphic anomalies, such as faults, channels, and fractures in subsurface. However, deep seismic data typically suffer from a low signal-to-noise ratio and a weak reflection amplitude, thus it may not provide a better insight for seismic attribute analysis. The phase information has the ability to detect subtle changes in subsurface but it is sensitive to noise, thereby masking some stratigraphic features in the full-bandwidth data. To address these two issues, we propose a multispectral phase-based geosteering coherence method by combining coherence and spectral decomposition for deep stratigraphic feature characterization. The proposed method can effectively select and utilize the phase components of favorable spectral bands, which can detect different scale geologic discontinuities and reduce or avoid the effect of random noise in deep seismic data. Furthermore, corendering the coherence images of three different frequency components using red-green- blue blending can detect more geologic details in subsurface. The examples including 3-D physical modeling data and real seismic data set of carbonate reservoir from western deep formation are employed to demonstrate the effectiveness of the proposed method. The coherence attributes obtained from the proposed method can detect the weak or hidden geologic details clearer than the geosteering coherence calculated from the broadband seismic data, and it may serve as a future tool for detecting the distribution of geologic abnormalities in deep exploration.

关键字：Deep exploration geosteering coherence phase phase-frequency spectra seismic interpretation

ISSN号：1545-598X

卷、期、页：卷: 16 期: 8 页: 1309-1313

发表日期：2019-08-01

影响因子：2.761000

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：IEEE Geoscience and Remote Sensing Letters

参与作者：高建虎,李胜军

通讯作者：王铁一

第一作者：袁三一,王尚旭

论文类型：期刊论文

论文概要：王铁一,袁三一,高建虎,李胜军,王尚旭，Multispectral Phase-Based Geosteering Coherence Attributes for Deep Stratigraphic Feature Characterization，IEEE Geoscience and Remote Sensing Letters，2019，卷: 16 期: 8 页: 1309-1313

论文题目：Multispectral Phase-Based Geosteering Coherence Attributes for Deep Stratigraphic Feature Characterization