石油地球物理勘探2024，Vol.59Issue(4)：819-827,9.DOI:10.13810/j.cnki.issn.1000-7210.2024.04.019
"断层阴影"识别与校正方法
Identification and correction methods of fault shadow zone:A case study of Shengping tectonics in Songliao Basin
摘要
Abstract
Stratigraphic dislocations often cause lateral variations of velocity,resulting in the phenomenon of fault shadow zone in time-domain seismic data,which affects geological interpretation and trap evaluation.To this end,taking the Shengping tectonics in the Songliao Basin as an example,the phenomenon of fault shadow zone is analyzed,and three identification methods are proposed:forward modeling,well-seismic combined stratigraphic correlation,and average velocity mapping.Based on these analyses,two correction methods,namely,high-precision velocity field correction and time-domain horizon correction,are proposed for the fault shadow zone.The results indicate that the high-precision velocity field correction method effectively corrects the data volume and has broader adaptability,while the time-domain horizon correction method allows for quick and straightforward horizon corrections and provides valuable insights for similar areas.关键词
"断层阴影"识别/"断层阴影"校正/地震正演模拟/高精度速度场校正/时间域层位校正/松辽盆地升平构造Key words
fault shadow zone identification/fault shadow zone correction/seismic forward modeling/high-preci-sion velocity field correction/time-domain horizon correction/Shengping tectonics in Songliao basin分类
天文与地球科学引用本文复制引用
于婕,王静怡,张芝铭,刘晓文,穆伦,刘宗堡.."断层阴影"识别与校正方法[J].石油地球物理勘探,2024,59(4):819-827,9.基金项目
本项研究受国家自然科学基金青年科学基金项目"伸展条件下不同走向断层生长连接模式及伴生圈闭形成机制研究"(42102173)和国家自然科学基金面上项目"基于储层构型理论解析的三角洲相致密砂岩储集性多级次表征研究"(42172161)联合资助. （42102173）
