Pitfall in Sedimentary Interpretation Using Seismic Attributes: Taking the Dong2 MemberiIn East Depression, Offshore Area of Liaohe Basin as an Example

详细信息   

• 责任者：Yang Yi (College of Petroleum Engineering ; Xi’an Shiyou University ; Xi’an 710065 ; China) ; Jiang Zaixing
• 刊名：Earth Science Frontiers
• 出版年：2012
• 卷期：19(1)
• 关键词：地震属性 ; seismic attributes ; 沉积环境 ; sedimentary environment ; 砂体 ; sand bodies ; 辽河平原 ; Liaohe Plain
• 页码：p.221-227
• 图表：9 illus., 18 refs.
• 分类号：1600
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

摘要

 To better understand sedimentary types in the Dong2member of offshore in the Liaohe Basin,through the research of modern river deposition and comprehensive analyses of cores,well logs,and seismic profiles,it was proved that the dominant facies in Dong2member is characterized by shore shallow lacustrine-beach-bar facies,instead of the fluvial facies deduced by seismic attributes slices.The key factor in interpreting ancient depositional environment is the concept of"preservation".Migration and divagation often happened during the river evolution,so it is hard to preserve a complete river channel.Analyses of the sedimentary environments should follow the study order of core facies-logging facies-seismic facies,but not only based on seismic attributes.