Research and Application of Imaging Technology in Complex Fault Area of Paleogene in Zhuyi Sag
ZHANG Ming
XIAO Zhangbo
YI Hao
HE Yanbing
ZHAO Yue
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.
Keywords：Complex faultSeismic imagingBroadband processingVelocity modeling
Publication Date：2024-03-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 25-31 )