石油地球物理勘探2023，Vol.58Issue(6)：1463-1471,9.DOI:10.13810/j.cnki.issn.1000-7210.2023.06.018
碳酸盐岩缝洞型储层叠前—叠后地震综合预测方法及应用
Pre-stack and post-stack seismic comprehensive prediction method and its application in carbonate fractured-vuggy reservoirs
摘要
Abstract
The deep carbonate fractured-vuggy reservoir in Tarim Basin is characterized by rapid lateral changes,strong heterogeneity,and complex contact relationship between fractures and caves,which seriously restrict the sub-sequent exploration and development.Thus,this paper studies a comprehensive prediction method of fractured-vuggy reservoirs based on pre-stack and post-stack seismic multi-attribute analysis.Based on the post-stack seismic data,we firstly select the multispectral geosteering coherence attributes as the sensitive attributes for large fault and cave pre-diction through multi-attribute comparative analysis.Secondly,based on pre-stack wide-azimuth seismic data,we pro-pose an anisotropic strength characterization method based on the wide-azimuth geosteering phase attributes.The sin-gular value decomposition(SVD)is used to calculate the ratio of the maximum singular value to the sum of singular values from different azimuth geosteering phase attributes.The obtained results can be used to characterize the distri-butions of anisotropic strength in the target reservoir and taken as underground fracture prediction results.Finally,the post-stack large fault and cave characterization results are combined with the pre-stack fracture prediction results for analysis,and the results can be applied to the prediction of carbonate fractured-vuggy reservoirs in Tarim Basin.The contact relationship between fractures and caves can be clearly characterized,which is more consistent with the real drilling results,thus providing a favorable basis for subsequent exploration and development.关键词
深层碳酸盐岩/缝洞型储层/分频导向相干/宽方位导向相位属性/叠前方位各向异性Key words
deep carbonate/fractured-vuggy reservoir/multispectral geosteering coherence/wide-azimuth geosteering phase attributes/pre-stack azimuthal anisotropic分类
天文与地球科学引用本文复制引用
刘韬,王铁一,孙珂,韩东..碳酸盐岩缝洞型储层叠前—叠后地震综合预测方法及应用[J].石油地球物理勘探,2023,58(6):1463-1471,9.基金项目
本项研究受国家自然科学基金项目"海相深层油气富集机理与关键工程技术基础研究"(编号:U19B6003)、中石化科技部项目"塔北—塔中震旦系—寒武系储盖条件研究"(编号:P22122)和中石化石油勘探开发研究院项目"深层碳酸盐岩缝洞体地震精细定量表征技术"(编号:YK-2023-27-2)联合资助. （编号:U19B6003）
