Multi-well wavelet-synchronized inversion based on particle swarm optimization

IF 0.7 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Applied Geophysics Pub Date : 2024-08-24 DOI:10.1007/s11770-024-1123-6
Huan Yuan, San-Yi Yuan, SuQin, Hong-Qiu Wang, Hua-Hui Zeng, Shi-Jun Yue
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引用次数: 0

Abstract

Wavelet estimation is an important part of high-resolution seismic data processing. However, it is difficult to preserve the lateral continuity of geological structures and effectively recover weak geological bodies using conventional deterministic wavelet inversion methods, which are based on the joint inversion of wells with seismic data. In this study, starting from a single well, on the basis of the theory of single-well and multi-trace convolution, we propose a steady-state seismic wavelet extraction method for synchronized inversion using spatial multi-well and multi-well-side seismic data. The proposed method uses a spatially variable weighting function and wavelet invariant constraint conditions with particle swarm optimization to extract the optimal spatial seismic wavelet from multi-well and multi-well-side seismic data to improve the spatial adaptability of the extracted wavelet and inversion stability. The simulated data demonstrate that the wavelet extracted using the proposed method is very stable and accurate. Even at a low signal-to-noise ratio, the proposed method can extract satisfactory seismic wavelets that reflect lateral changes in structures and weak effective geological bodies. The processing results for the field data show that the deconvolution results improve the vertical resolution and distinguish between weak oil and water thin layers and that the horizontal distribution characteristics are consistent with the log response characteristics.

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基于粒子群优化的多井小波同步反演
小波估算是高分辨率地震数据处理的重要组成部分。然而,传统的确定性小波反演方法是基于井与地震资料的联合反演,难以保持地质构造的横向连续性,也难以有效恢复软弱地质体。本研究从单井出发,在单井多道次卷积理论的基础上,提出了一种利用空间多井、多井侧地震数据进行同步反演的稳态地震小波提取方法。该方法采用空间可变加权函数和小波不变约束条件,通过粒子群优化从多井和多井侧地震数据中提取最优空间地震小波,以提高提取小波的空间适应性和反演稳定性。模拟数据表明,使用所提方法提取的小波非常稳定和准确。即使在信噪比较低的情况下,所提出的方法也能提取出令人满意的地震小波,反映出构造和弱有效地质体的横向变化。野外数据处理结果表明,解卷积结果提高了垂直分辨率,区分了弱油层和水薄层,水平分布特征与测井响应特征一致。
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来源期刊
Applied Geophysics
Applied Geophysics 地学-地球化学与地球物理
CiteScore
1.50
自引率
14.30%
发文量
912
审稿时长
2 months
期刊介绍: The journal is designed to provide an academic realm for a broad blend of academic and industry papers to promote rapid communication and exchange of ideas between Chinese and world-wide geophysicists. The publication covers the applications of geoscience, geophysics, and related disciplines in the fields of energy, resources, environment, disaster, engineering, information, military, and surveying.
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