[1]蒋玉婷,汪生好,侯 凯,等.基于全波形反演与断控层析反演联合速度建模的断层阴影带成像技术与实践[J].华南地震,2026,46(04):185-193.[doi:10.13512/j.hndz.2026.04.22]
　JIANG Yuting,WANG Shenghao,HOU Kai,et al.Fault Shadow Zone Imaging Technology and Practice Based on Joint Velocity Modeling of Full-Waveform Inversion and Fault-Constrained Tomographic Inversion[J].,2026,46(04):185-193.[doi:10.13512/j.hndz.2026.04.22]
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基于全波形反演与断控层析反演联合速度建模的断层阴影带成像技术与实践()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
46
期数:
2026年04期
页码:
185-193
栏目:
海洋地球物理
出版日期:
2026-07-09

文章信息/Info

Title:
Fault Shadow Zone Imaging Technology and Practice Based on Joint Velocity Modeling of Full-Waveform Inversion and Fault-Constrained Tomographic Inversion
文章编号:
1001-8662（2026）04-0185-09
作者:
蒋玉婷1; 2; 汪生好1; 2; 侯 凯1; 2; 郭 丽1; 2; 夏晓燕1; 2
1.中海石油（中国）有限公司深圳分公司，深圳 518054;2.中海石油深海开发有限公司，深圳 518054
Author(s):
JIANG Yuting1; 2; WANG Shenghao1; 2; HOU Kai1; 2; GUO Li1; 2; XIA Xiaoyan1; 2
1.Shenzhen Branch, CNOOC China Ltmited, Shenzhen 518054, China;2.CNOOC Deepwater Development Limited, Shenzhen 518054, China
关键词:
全波形反演; 断控层析反演; 断层阴影
Keywords:
Full-waveform inversion;  Fault-constrained tomographic inversion;  Fault shadow
分类号:
P631.4+43
DOI:
10.13512/j.hndz.2026.04.22
文献标志码:
A
摘要:
B凹陷A断块受断层阴影影响导致地震成像资料存在多解性，常规速度建模与成像技术难以准确判断构造形态及高点位置，严重影响本区开发井的部署。此次研究聚焦高精度速度建模技术，提出全波形反演与断控层析反演联合速度建模策略，方法首先利用全波形反演获得高分辨率初始速度场，在此基础上，将断裂几何形态作为先验约束条件嵌入层析反演迭代过程，校正断裂边界两侧速度横向突变特征，克服传统层析反演对断层附近复杂速度难以精细表征的不足。实际工区应用验证，该融合建模方法所得速度模型能够高度贴合工区地下真实地质构造特征，有效改善断层阴影区域成像畸变问题，构造误差由12~15m降低到3m以内，构造研究精度提高近80%，为研究区精细构造解析、地质规律研究提供优质、可靠的技术手段。
Abstract:
Due to the influence of fault shadow in Block A of Sag B, the seismic imaging data exhibits multiplicity of solutions. Conventional velocity modeling and imaging techniques are difficult to accurately identify the structural morphology and structural high position, which seriously restricts the deployment of development wells in this area. Focusing on the high-precision velocity modeling technology, this study proposes a joint velocity modeling strategy combining full waveform inversion and fault-constrained tomographic inversion. Firstly, full waveform inversion is adopted to obtain a high-resolution initial velocity field. On this basis, the geometric morphology of faults is embed?ded into the tomographic inversion iteration process as a priori constraint, so as to correct the lateral abrupt velocity variation on both sides of fault boundaries and overcome the deficiency of traditional tomographic inversion in finely characterizing complex velocities near faults. Field application verification shows that the velocity model obtained by this integrated modeling method is highly consistent with the actual underground geological structure of the work area, effectively improving the imaging distortion in fault shadow zones. The structural error is reduced from 12-15 m to within 3 m, with the structural research accuracy improved by 80%, which provides a high-quality and reliable technical means for fine structural interpretation and geological law research in the study area.

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备注/Memo

备注/Memo:
收稿日期：2026-04-24
作者简介：蒋玉婷(1989-），女，工程师，主要从事油藏地球物理研究工作。E-mail: jiangyt6@cnooc.com.cn
更新日期/Last Update: 2026-07-20