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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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

Received: 09 December 2024 Published: 22 April 2025

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	Articles by authors
	Teng-Teng LUO
	Xin-Yi DUAN
	Jin-Hui ZHANG
	Zhen MA

Cite this article:

Teng-Teng LUO,Xin-Yi DUAN,Jin-Hui ZHANG, et al. 3D seismic data splicing and its application to shallow sand bodies in the Bohai oilfield[J]. Geophysical and Geochemical Exploration, 2025, 49(2): 340-348.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.1299 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I2/340

Schematic diagram of splicing work area

Comparison of main collection parameters of data in splicing work area

Schematic of three different selection schemes for overlapping areas

Comparison of spliced sections before(a) and after(b) amplitude matching

Comparison of spliced profiles before(a) and after(b) matched filtering

Frequency characteristics of seismic data in spliced work area

This method compares the sections before(a) and after(b) seismic data splicing in the fusion area

Comparison of stacked profiles corresponding to three splicing schemes
a—only apply data from Block A;b—only apply data from Block B;c—application of two Block fusion data

Spectrum comparison of three splicing schemes

Comparison of signal-to-noise ratio of three splicing schemes

Attribute map of minimum amplitude values of a sand body in Bohai Sea
a—only apply data from Block A;b—only apply data from Block B;c—application of two Block fusion data

Comparison of three sets of data connected wells
a—only apply data from Block A;b—only apply data from Block B;c—application of two Block Fusion data

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