摘要：The use of seismic exploration data to invert shear (S-) wave information plays a very important role in oil and gas exploration, especially in reservoir prediction with increasingly complex lithology and deeper target layers. Combining longitudinal (P-) and S-waves information can help us better describe reservoirs. In theory, to obtain accurate shear wave information through inversion, we will need shear or converted wave (PS-wave) data to be used in a joint inversion. The propagation of S-wave in underground media is different from that of P-wave, as S-wave are mainly influenced by the rock skeleton and less affected by pore fluids. As a result, we propose a joint prestack seismic inversion method for PP- and PS-waves data based on L1-2-norm constraints. Firstly, a joint coefficient matrix is constructed using linear approximation equations for the reflection coefficients of PP- and PS-wave. Next, the L1-2-norm constraint is introduced to construct the inversion objective function, and a two-steps iterative strategy is applied for optimization, achieving a three-parameter prestack inversion. In the synthetic data testing, different models are used for inversion comparison. The synthetic data inversion results show that compared with traditional norm constrained methods or PP-wave inversion alone, the proposed joint inversion method can invert results with higher correlation coefficients and lower errors, confirming the accuracy and stability of the proposed method. Finally, the proposed method is applied to offshore OBN multi-component seismic data. The well and seismic joint comparative analysis of the inversion results shows that the inversion results are reliable, and compared with PP-wave inversion alone, the results provide higher resolution and better continuity, enabling more accurate prediction of reservoirs.

关键字：prestack joint inversion; OBN seismic data; L1-2 norm; reservoir prediction; multi-component seismic

ISSN号：2296-6463

卷、期、页：卷13

发表日期：2025-09-15

期刊分区（SCI为中科院分区）：四区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：FRONTIERS IN EARTH SCIENCE

参与作者：李芳,刘仕友,汪锐

通讯作者：唐裕元

第一作者：陈双全

论文类型：期刊论文

论文概要：李芳,刘仕友,汪锐,唐裕元,陈双全，OBN seismic data PP- and PS-waves joint inversion and reservoir characterization，FRONTIERS IN EARTH SCIENCE，2025，卷13

论文题目：OBN seismic data PP- and PS-waves joint inversion and reservoir characterization