PROGRESS IN STUDY OF DEEP-WATER DEPOSITIONAL SYSTEMS IN THE NORTHERN CONTINENTAL SLOPE OF THE SOUTH CHINA SEA AND ITS IMPLICATIONS FOR GAS HYDRATE RESEARCH

Su Ming, Y. Rui, Zhang Cuimei, Cong Xiaorong, Liang Jinqiang, Sha Zhi-bin
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引用次数: 5

Abstract

Recent researches of marine gas hydrate indicate that the formation,migration and distribution of the gas hydrate have close relationship with deep-water depositional systems.With the development of deep-water observations and drilling technology and the wide use of high-resolution 3D seismic data,the studies on deep-water depositional systems have made great progress.Consequently,the analysis and description of the deep-water deposits in the shallow layers in a promising target area have become a hot and difficult question in gas hydrate exploration.This paper aims to provide a systematic study on the progress of the deep-water depositional system from following aspects: source to sink system,internal architecture description,and complex controlling factors.In combination with the current situation and problems of gas hydrate exploration on the northern continental slope of the South China Sea,some suggestions were proposed,including the analysis of deep-water depositional types and background,the description of the internal architecture and evolution of the deep-water deposits in the shallow layers,and the relationship between the deep-water deposits and gas hydrate in the shallow layers,in order to provide a reference for research and exploration of gas hydrate in the region.
南海北部陆坡深水沉积体系研究进展及其对天然气水合物研究的启示
近年来海洋天然气水合物的研究表明,天然气水合物的形成、运移和分布与深水沉积体系有着密切的关系。随着深水观测和钻井技术的发展以及高分辨率三维地震资料的广泛应用,深水沉积体系的研究取得了很大进展。因此,对具有勘探前景的浅层深水矿床进行分析和描述已成为天然气水合物勘探中的热点和难点问题。本文旨在从源汇体系、内部构型描述、复杂控制因素等方面对深水沉积体系进展进行系统研究。结合南海北部陆坡天然气水合物勘探现状及存在的问题,从深水沉积类型及背景分析、浅层深水沉积内部构型及演化描述、深水沉积与浅层天然气水合物的关系等方面提出建议,以期为研究和勘探提供参考该地区的天然气水合物。
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