渤海中南部海底浅层气的探测方法及其特征分析

摘要/Abstract

摘要： 海底浅层气作为一种海洋地质灾害,严重威胁海底地层稳定性,海洋工程领域将其作为关键性的安全影响因素。应用声学技术和地震技术,在渤海中南部海域识别出多处浅层气富集区。运用常规物探技术和高分辨率数字地震技术,综合分析渤中和蓬莱区块浅层气的反射特征认为,断裂为浅层气运移的主控因素。在特征分析的基础上,结合中浅地层剖面和数字地震剖面,初步确定渤海中南部浅层气形成和运移模式,并通过讨论浅层气对钻井作业、海上平台安装与运维、海底管道设施的潜在威胁,为浅层气识别和海洋工程建设提供参考。

关键词: 渤海中南部, 浅层气, 地震探测

Abstract: As a kind of marine geological disaster,shallow seabed gas seriously threatens the stability of the seabed formation,so it is regarded as a key safety factor in the field of marine engineering. By applying acoustic and seismic techniques,several shallow gas-enriched areas have been identified in the central and southern waters of the Bohai Sea. Using conventional geophysical exploration technology and high-resolution digital seismic technology,a comprehensive analysis of the reflection characteristics of shallow gas in the Bozhong and Penglai blocks indicates that faults are the main controlling factor for shallow gas migration. Based on the characteristic,combined with medium-shallow stratigraphic profiles and digital seismic profiles,the formation and migration models of shallow gas in the central and southern Bohai Sea have been initially determined. By discussing the potential threats of shallow gas to drilling operations,offshore platform installation,operation and maintenance,and subsea pipeline facilities,this study provides a reference for shallow gas identification and marine engineering construction.

Key words: central and southern Bohai Sea, shallow gas, seismic detection

中图分类号:

P722.4

刘鑫, 陈冠军, 冯湘子, 李昱霏. 渤海中南部海底浅层气的探测方法及其特征分析[J]. 天津科技, 2025, 52(11): 37-40+44.

LIU Xin, CHEN Guanjun, FENG Xiangzi, LI Yufei. Detection methods and characteristic analysis of shallow gas in central and southern Bohai Sea[J]. TIANJIN SCIENCE & TECHNOLOGY, 2025, 52(11): 37-40+44.

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