三维地震资料拼接处理及在渤海油田浅层砂体的应用

doi:10.11720/wtyht.2025.1299

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摘要

常规拼接处理方法以满足构造解释为目的,更多是基于地震数据本身使大套地层反射能量、频率趋于一致为目标,尤其在处理重叠区数据时仅采用其中一个工区的地震资料,无法充分利用各个工区地震资料的有效信息,导致重叠区地震资料保真度低,严重影响后续储层连通性及含油气性的判别。本文提出一种基于加权融合的重叠区数据拼接方法,在重叠区将不同工区的地震数据与相应的权值进行加权融合输出为一道地震数据。实际地震资料应用结果表明,基于重叠区数据融合拼接的处理结果能够有效改善地震资料品质,剖面上同相轴连续性变好,更有利于浅层砂体连通性的判别。

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	罗腾腾
	段新意
	张金辉
	马振

关键词 ：地震资料拼接, 重叠区, 反距离加权, 浅层砂体, 连通性

Abstract：

Conventional splicing methods aim to serve structural interpretation and align the reflection energy and frequency of large strata based on seismic data themselves.They adopt seismic data only from one study area in processing data of overlap zones,failing to fully utilize the effective information in seismic data of all study areas.Consequently,the resulting low-fidelity seismic data in overlap zones severely affect subsequent discrimination of reservoir connectivity and hydrocarbon-bearing properties.This study proposed a weighted fusion-based data spicing method for overlap zones,where seismic data from different study areas are fused with corresponding weights to generate a trace of seismic data.The application of the proposed method to actual seismic data shows that the processing results based on the fusion and splicing of data in overlap zones can effectively improve the quality of seismic data,with high continuity of seismic events on the profile, contributing significantly to the discrimination of the connectivity of shallow sand bodies.

Key words： seismic data splicing overlap zone inverse distance weighting shallow sand body connectivity

收稿日期: 2024-12-09 修回日期: 2025-02-13 出版日期: 2025-04-20

ZTFLH:

P631.4

基金资助:国家自然科学基金项目“渤海海域中生界火山岩有利相带地震响应机理及高精度成像方法研究”(U24B2022)

作者简介: 罗腾腾(1995-),女,物探工程师,主要从事地震资料处理与评估工作。Email:luott3@cnooc.com.cn

引用本文:

罗腾腾, 段新意, 张金辉, 马振. 三维地震资料拼接处理及在渤海油田浅层砂体的应用[J]. 物探与化探, 2025, 49(2): 340-348.
LUO Teng-Teng, DUAN Xin-Yi, ZHANG Jin-Hui, MA Zhen. 3D seismic data splicing and its application to shallow sand bodies in the Bohai oilfield. Geophysical and Geochemical Exploration, 2025, 49(2): 340-348.

链接本文:

https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2025.1299 或 https://www.wutanyuhuatan.com/CN/Y2025/V49/I2/340

Fig.1 拼接工区示意

Table 1 拼接工区资料主要采集参数对照

Fig.2 3种不同重叠区的选取方案示意

Fig.3 振幅匹配前(a)、后(b)的拼接剖面对比

Fig.4 匹配滤波前(a)、后(b)的拼接剖面对比

Fig.5 拼接工区地震资料频率特征

Fig.6 本文方法对融合区地震资料拼接前(a)、后(b)的剖面对比

Fig. 7 3种拼接方案叠加剖面对比
a—仅应用A区块资料; b—仅应用B区块资料;c—应用两区块融合资料

Fig.8 3种拼接方案的频谱对比

Fig.9 3种拼接方案的信噪比对比

Fig.10 渤海某砂体最小振幅值属性
a—仅应用A区块资料; b—仅应用B区块资料;c—应用两区块融合资料

Fig.11 3套资料连井剖面对比
a—仅应用A区块资料; b—仅应用B区块资料;c—应用两区块融合资料

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