石油地质与工程2026，Vol.40Issue(3)：55-61,71,8.DOI:10.26976/j.cnki.sydz.202602007
扩展成像条件下的全波形反演方法研究与应用
Study on the method and application of full waveform inversion under extended imaging conditions
摘要
Abstract
Full waveform inversion(FWI)is widely applied in the field of petroleum and natural gas exploration.However,traditional FWI based on the cross-correlation imaging condition suffers from low inversion accuracy,as it fails to effectively incorporate the velocity information around imaging points and thus cannot meet the higher requirements of hydrocarbon exploration.To address this issue,based on the idea of the extended model,the cross-correlation extended imaging condition for the source wavefield and receiver wavefield is derived in the frequency domain.Combined with the optimization constraint condition of differential similarity,a novel FWI method under the extended imaging condition is proposed.Theoretical model calculations and field data applications demonstrate that the proposed method can effectively improve the accuracy and stability of velocity inversion in complex structural areas and meet the demands of hydrocarbon exploration.关键词
扩展成像条件/互相关成像条件/全波形反演Key words
extended imaging condition/cross-correlation imaging condition/full waveform inversion/least-squares inversion分类
天文与地球科学引用本文复制引用
仇瀚之,田坤,步长城,秦宁,刘畅..扩展成像条件下的全波形反演方法研究与应用[J].石油地质与工程,2026,40(3):55-61,71,8.基金项目
新型油气勘探开发国家科技重大专项"渤海湾超级盆地油气富集规律与新领域勘探技术"(2024ZD1400100) （2024ZD1400100）
东营市自然科学基金资助项目"自适应稳定的黏弹介质逆时偏移成像方法研究"(2023ZRO7). （2023ZRO7）
