Characteristics of geotemperature-pressure systems and their implications for petroleum geology at Baiyun depression, deep-water area of northern South China Sea

被引：1
|
作者：
Guo Z.-F. [1 ]
Liu Z. [1 ]
Wang W. [1 ]
Zhang G.-C. [2 ]
Shen H.-L. [2 ]
机构：
[1] State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum
[2] Research Institute of China National Offshore Oil Corporation
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2011年 / 36卷 / 05期
关键词：
Deep-water area of northern South China Sea; Distribution of hydrocarbon; Geotemperature-pressure system; Marine geophysics; Petroleum geology;
D O I：
10.3799/dqkx.2011.086
中图分类号：
学科分类号：
摘要：
Baiyun depression is characterized by high geotemperature and high pressure formation. By theory of geotemperature-pressure system, the geotemperature, formation pressure and geotemperature-pressure system at Baiyun depression and their relationships with hydrocarbon distribution are analyzed in vertical and lateral sections. Research shows that overpressure composite geotemperature-pressure system develops at Baiyun depression, namely normal geotemperature-pressure system of shallow zone and overpressure system of deep zone. Based on coupling characteristics of geotemperature and pressure, Baiyun depression is divided into six geotemperature-pressure system divisions. The northern slope belt is located in the area with high temperature and normal pressure, as well as high temperature and high pressure. The main sag is mainly located in the area with ultra high temperature and high pressure, and the center belt belongs to ultra high temperature and ultra high pressure region. The southern slope belt is located in the area with high temperature and high pressure. Natural gas pools are mainly distributed in relative low energy area. The special characteristics of geotemperature-pressure system at Baiyun depression provide strong power for hydrocarbon migration, and control the distribution of oil and gas reservoirs.
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页码：831 / 836
页数：5
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