三维广义SRME方法及其应用

中国石油勘探 ›› 2016, Vol. 21 ›› Issue (4): 108-113.

三维广义SRME方法及其应用

李三福,帅鹏宇

中海油能源发展股份有限公司工程技术分公司物探技术研究所

出版日期:2016-07-15 发布日期:2016-07-15
基金资助:
国家科技重大专项“南海北部深水区潜在富生烃凹陷评价”（2011ZX05025）。

Method of 3D GSRME and its application

Li Sanfu, Shuai Pengyu

Geophysical Department of CNOOC EnerTech-Drilling & Production Co.

Online:2016-07-15 Published:2016-07-15

摘要/Abstract

摘要： 随着深水地震勘探的进展，压制坡折带和深水崎岖海底等复杂地质构造的自由表面多次波逐渐变为海洋地震资料处理中的难题，而传统的三维自由表面多次波衰减（SRME）技术在数据重构问题上存在很明显的不足。因此，在三维SRME技术的基础上，提出了三维广义SRME技术来压制自由表面多次波。该方法借鉴贡献道思想和稀疏反演方法，结合focal变换和三维曲波变换，优化构建全局自由表面多次波数据，最后通过自适应匹配相减来压制多次波。实际资料应用表明，该方法能有效压制陡倾角复杂地质构造情况下的自由表面多次波，提高成像品质，取得了重大突破。

关键词: 三维广义SRME, 坡折带, 崎岖海底, 陡倾角, 稀疏反演, focal变换, 三维曲波变换

Abstract: With the progress of seismic exploration in deep water, one of the challenges for marine seismic data processing is how to suppress the surface related multiple of complex geological structures, such as slope break zones and rough sea bottom. However, the traditional 3D SRME (surface related multiple elimination) is obviously deficient in data reconstruction. In this paper, the 3D GSRME (generalized surface related multiple elimination) was developed to eliminate surface related multiple. Based on contribution gather and sparse inversion methods, the 3D GSRME can construct the whole surface related multiple data by using the focal transform and 3D curvelet transform. Finally, multiple waves are suppressed by adaptive matching subtraction. The application of 3D GSRME in actual data shows that this method can effectively eliminate the surface related multiple of complex geologic structures with steep slope angle so as to improve the imaging quality.

Key words: focal transform, 3D curvelet transform, 3D GSRME, slope break zone, rough sea bottom, steep slope angle, sparse inversion

李三福, 帅鹏宇. 三维广义SRME方法及其应用[J]. 中国石油勘探, 2016, 21(4): 108-113.

Li Sanfu, Shuai Pengyu. Method of 3D GSRME and its application[J]. China Petroleum Exploration, 2016, 21(4): 108-113.

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