成都理工大学学报（自然科学版）2017，Vol.44Issue(3)：356-361,6.DOI:10.3969/j.issn.1671-9727.2017.03.08
利用分频相干技术检测页岩裂缝发育带
Detection of fracture development zone in shale by using discrete frequency coherence cubes
摘要
Abstract
Shale reservoir is characterized by low porosity and low permeability.The existence and development of fractures in shale are key factors for the formation of quality reservoir.It is very important to detect and study fracture development zones in shale in order to locate the gas and oil pools.Discrete frequency coherence cubes can be used to fulfill the purpose.Firstly,the original seismic data are processed by spectral decomposition,followed by the calculation of coherence cubes of single-band seismic data.Then,single-band coherence cubes of selected dominant bands are reconstructed by using principal component analysis.Finally,the reconstructed discrete frequency coherence cube can be used to predict the development of fracture zones.It shows that coherence cubes at different frequency bands reflect features of fractures of different scales,and the reconstructed discrete frequency coherence cube interpret the integral features of fractures of different scales in an interest area.Discrete frequency coherence technique plays a role in the fulfillment of accurate description of fracture development zones in shale.关键词
相干/裂缝检测/分频/主成分分析/页岩Key words
coherence/detection of fracture/discrete frequency/principal component analysis/shale分类
天文与地球科学引用本文复制引用
陈杰,李琼,范欣然,李勇,何剑..利用分频相干技术检测页岩裂缝发育带[J].成都理工大学学报（自然科学版）,2017,44(3):356-361,6.基金项目
国家自然科学基金项目(41274129) （41274129）
国家科技重大专项(2011ZX05035-005-003HZ). （2011ZX05035-005-003HZ）
