石油科学通报2025，Vol.10Issue(6)：1188-1198,11.DOI:10.3969/j.issn.2096-1693.2025.01.030
基于井和层位约束的PP与SS波深度域匹配方法及其应用
A well-and horizon-constrained depth-domain matching method for PP and SS waves and its application
摘要
Abstract
Seismic shear(SS)waves have been employed in hydrocarbon exploration for decades,providing valuable infor-mation on lithology and anisotropy that effectively complements compressional(PP)wave observations.However,even under depth-domain imaging conditions,PP-and SS-wave data often cannot be precisely aligned due to differences in velocity model accuracy,imaging errors,and inconsistencies in horizon interpretation.Such mismatches can introduce significant uncertainty into joint inversion,reduce the reliability of geological interpretation.To address this issue,this paper proposes a depth-domain PP-wave and SS-wave data matching method by using well and horizon constraints.Firstly,the joint depth relationships are established through well-to-seismic calibration of PP-and SS-waves on Kirchhoff prestack depth migration sections.These rela-tionships are then used,under horizon constraints,to construct an initial stretching scale model for SS-waves,providing a global matched field that ensures consistency of key stratigraphic horizons across PP-and SS-wave sections.Although this step corrects large-scale misalignment,residual errors remain due to limitations in the stretching scale model and cumulative inaccuracies.Finally,a dynamic time warping(DTW)algorithm is applied to local nonlinear optimization.Application to field seismic data from the Sanhu area demonstrates that the proposed method effectively corrects stratigraphic misalignment,improves waveform similarity between PP-and SS-wave sections,and provides a more reliable basis for reservoir characterization and fluid interpre-tation.关键词
地震横波/深度域/井和层位/DTW/匹配Key words
seismic shear wave/depth domain/well-and horizon-constrained/DTW/matching分类
天文与地球科学引用本文复制引用
SUN Hongri,ZHANG Feng..基于井和层位约束的PP与SS波深度域匹配方法及其应用[J].石油科学通报,2025,10(6):1188-1198,11.基金项目
中石油地球物理勘探应用基础试验和先进理论方法研发项目(2022DQ0604-02)资助 （2022DQ0604-02）
