无拉伸畸变的三阶累积量动校正方法研究

doi:10.13209/j.0479-8023.2024.101

北京大学学报自然科学版 ›› 2025, Vol. 61 ›› Issue (1): 77-85.DOI: 10.13209/j.0479-8023.2024.101

无拉伸畸变的三阶累积量动校正方法研究

梁上林^1,†, 王春明¹, 李彦民², 张征¹, 胡天跃³, 崔栋¹, 侯思安¹, 阎艺璇¹, 胡莲莲¹

1. 中国石油勘探开发研究院, 北京 100083 2. 中国石油吐哈油田分公司, 哈密 839009 3. 北京大学地球与空间科学学院, 北京 100871

收稿日期:2023-12-15 修回日期:2024-07-30 出版日期:2025-01-20 发布日期:2025-01-20
通讯作者: 梁上林, E-mail: zzxxl(at)petrochina.com.cn
基金资助:
中国石油集团公司基础性前瞻性科技专项(2024ZZ5504)和中国石油–北京大学战略合作基础研究项目资助

Third-Order Cumulant to Perform Normal Moveout without Stretching Distortions

LIANG Shanglin^1,†, WANG Chunming¹, LI Yanmin², ZHANG Zheng¹, HU Tianyue³, CUI Dong¹, HOU Sian¹, YAN Yixuan¹, HU Lianlian¹

1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083 2. PetroChina Tuha Oilfield Company, Hami 839009 3. School of Earth and Space Sciences, Peking University, Beijing 100871

Received:2023-12-15 Revised:2024-07-30 Online:2025-01-20 Published:2025-01-20
Contact: LIANG Shanglin, E-mail: zzxxl(at)petrochina.com.cn

摘要/Abstract

摘要：

传统的动校正方法不仅在浅层和远偏移距道集上存在严重的拉伸畸变, 而且对动校正速度尤为敏感。针对这一问题, 基于最新的反射波地震干涉技术, 提出基于三阶累积量的动校正方法, 拓宽了地震干涉技术的应用范围, 是地震干涉更普适的表达。首先给出严格的理论推导, 证明所提方法的可行性; 然后用模型数据进行测试, 并检验其抗噪性; 最后将其应用于西部地区实际地震数据。模型和实际资料的成功应用表明, 所提方法在不需要动校正速度的情况下, 解决了动校拉伸畸变的问题, 与现有的两种方法相比, 具有更好的噪声压制能力。

关键词: 三阶累积量, 动校正(NMO), 拉伸畸变, 地震干涉

Abstract:

Traditional normal moveout (NMO) method not only suffers from severe stretching distortion on shallow and far offset traces, but also is particularly sensitive to NMO velocity. Based on the latest reflection seismic interferometry, this paper introduces the third-order cumulant in NMO process to solve above-mentioned issues. The method expands the application scope and is a more universal expression of traditional seismic interferometry in theory. This article first provides a rigorous theoretical derivation, then tests and verifies its noise resistance using model data, and finally applies it to field data in western China. The results show that the proposed method solves the problem of stretching distortions in far offset gathers without the need of correction velocity, and has better noise suppression effect compared with other two methods.

Key words: third-order cumulant, NMO, stretching distortion, seismic interferometry

梁上林, 王春明, 李彦民, 张征, 胡天跃, 崔栋, 侯思安, 阎艺璇, 胡莲莲. 无拉伸畸变的三阶累积量动校正方法研究[J]. 北京大学学报（自然科学版）, 2025, 61(1): 77-85.

LIANG Shanglin, WANG Chunming, LI Yanmin, ZHANG Zheng, HU Tianyue, CUI Dong, HOU Sian, YAN Yixuan, HU Lianlian. Third-Order Cumulant to Perform Normal Moveout without Stretching Distortions[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2025, 61(1): 77-85.

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链接本文: https://xbna.pku.edu.cn/CN/10.13209/j.0479-8023.2024.101

https://xbna.pku.edu.cn/CN/Y2025/V61/I1/77

无拉伸畸变的三阶累积量动校正方法研究

Third-Order Cumulant to Perform Normal Moveout without Stretching Distortions

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