天然气与石油2024，Vol.42Issue(4)：22-29,8.DOI:10.3969/j.issn.1006-5539.2024.04.003
广义Beta小波域地震高分辨率处理方法研究
Research on high-resolution seismic processing method in the generalized Beta wavelet domain
摘要
Abstract
The A oilfield in Bohai Bay is a typical braided delta deposit.Due to the deep burial of the fore-accumulation reservoir,the seismic data have a low main frequency and insufficient longitudinal resolution,which affects the accuracy of the characterization of the single-stage fore-accumulation reservoir.To address this issue,a generalized Beta wavelet domain seismic high-resolution processing method based on non-convex sparse constraints is proposed.Firstly,this high-resolution seismic processing method is represented as an inversion problem with regularization constraints in the wavelet domain,and the non-convex sparse constraints are introduced to obtain more robust and accurate attenuation compensation results,thereby enhancing the longitudinal resolution of seismic data.Secondly,the generalized Beta wavelet transform is introduced to obtain a better time-frequency spectrum that more closely matches the seismic data,and then compensate for the attenuation of each frequency.Finally,the validation results of the noise-free and noisy synthetic seismic data and 2D seismic data of A oilfield show that the proposed processing method can effectively improve the longitudinal resolution of seismic data.The relationship between the strong and weak seismic signals is obvious,and the transverse changes of the in-phase axis(pinch-out)are prominent,with the matching results of the seismic-well ties being in good agreement.Utilizing the research results to interpret the fore-accumulation can accurately characterize the lithologic trap boundary,providing technical support for the subsequent well location deployment and well trajectory optimization.关键词
高分辨率处理/广义Beta小波变换/非凸稀疏约束/反问题Key words
High resolution processing/Generalized Beta wavelet transform/Non-convex sparse constraint/Inverse problem引用本文复制引用
黄江波,唐何兵,吕振宇,张正龙..广义Beta小波域地震高分辨率处理方法研究[J].天然气与石油,2024,42(4):22-29,8.基金项目
中国海洋石油有限公司"十四五"重大科技项目"潜山油气成藏理论与勘探关键技术"(KJGG2022-0302) （KJGG2022-0302）
