华南地震2024，Vol.44Issue(1)：25-31,7.DOI:10.13512/j.hndz.2024.01.03
珠一凹陷古近系复杂断裂区成像技术研究与应用
Research and Application of Imaging Technology in Complex Fault Area of Paleogene in Zhuyi Sag
摘要
Abstract
The complex fault area of Paleogene in Zhuyi Sag,the Pearl River River Mouth Basin,northern South China Sea,is a favorable zone for oil and gas migration and accumulation,with great exploration potential.Howev-er,the Paleogene strata have a large burial depth,rapid lateral velocity changes,and there is a problem of un-clear seismic imaging.In addition,the seismic wave reflection path in complex fault areas is complex,making im-aging more difficult,which seriously restricts the oil and gas exploration process in this area.Firstly,high-preci-sion broadband processing technology is used to improve the reflection quality of low-frequency signal in earth-quakes;Then,geological constrained velocity modeling is introduced,and high-precision velocity inversion based on stable low-frequency signal model is used to improve the imaging effect of pre-stack depth migration and enhance the imaging quality of complex fault areas in the Paleogene.关键词
复杂断裂/地震成像/宽频处理/速度建模Key words
Complex fault/Seismic imaging/Broadband processing/Velocity modeling分类
天文与地球科学引用本文复制引用
张明,肖张波,易浩,何雁兵,赵越..珠一凹陷古近系复杂断裂区成像技术研究与应用[J].华南地震,2024,44(1):25-31,7.基金项目
"十四五"国家科技重大项目(KJGG2022-0403) （KJGG2022-0403）
