|本期目录/Table of Contents|

[1]龙祖烈 陈 聪 马 宁 翟普强 黄玉平 石 创.珠江口盆地深水区白云凹陷油气成因来源与成藏特征[J].中国海上油气,2020,32(04):36-45.[doi:10.11935/j.issn.1673-1506.2020.04.004]
 LONG Zulie CHEN Cong MA Ning ZHAI Puqiang HUANG Yuping SHI Chuang.Geneses and accumulation characteristics of hydrocarbons in Baiyun sag, deep water area of Pearl River Mouth basin[J].China Offshore Oil and Gas,2020,32(04):36-45.[doi:10.11935/j.issn.1673-1506.2020.04.004]
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珠江口盆地深水区白云凹陷油气成因来源与成藏特征()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第32卷
期数:
2020年04期
页码:
36-45
栏目:
油气勘探(南海东部海域勘探成果专辑)
出版日期:
2020-07-25

文章信息/Info

Title:
Geneses and accumulation characteristics of hydrocarbons in Baiyun sag, deep water area of Pearl River Mouth basin
文章编号:
1673-1506(2020)04-0036-10
作者:
龙祖烈 陈 聪 马 宁 翟普强 黄玉平 石 创
(中海石油深海开发有限公司 广东深圳 518054)
Author(s):
LONG Zulie CHEN Cong MA Ning ZHAI Puqiang HUANG Yuping SHI Chuang
(CNOOC Deepwater Development Limited, Shenzhen, Guangdong 518054, China)
关键词:
珠江口盆地 深水区 白云凹陷 油气成因来源 油气成藏特征
Keywords:
Pearl River Mouth basin deep water area Baiyun sag hydrocarbon genesis accumulation characteristics
分类号:
TE122.1
DOI:
10.11935/j.issn.1673-1506.2020.04.004
文献标志码:
A
摘要:
应用油气有机地球化学、流体包裹体等实验分析技术,精细解剖了珠江口盆地深水区白云凹陷油气成因来源与成藏特征,结果表明:白云凹陷已发现油气的生源构成呈现明显南北分带性,其中白云主洼北部、白云主洼东部、白云东洼的原油母源沉积环境为弱氧化环境,生源构成以陆源高等植物为主,天然气为混合母质成因气,油气主要来源于文昌组和恩平组浅湖—三角洲相泥岩; 而白云西洼、白云主洼南部的原油母源沉积环境为弱还原环境,生源构成以湖相藻类为主,天然气为油型气,油气主要来源于文昌组和恩平组浅湖—半深湖相泥岩。白云凹陷原油遭受了不同程度的气洗及蒸发分馏次生改造,其中白云主洼东部鼻状隆起带原油普遍遭受了晚期天然气的气洗改造,白云主洼内部原油主要发生了蒸发分馏作用,而白云东洼、白云主洼北部和白云主洼东部原油未遭受晚期天然气的气洗改造; 白云凹陷主体经历了3期油气充注,即第一期为拗陷期成藏(约23 Ma以来),第二期为新构造运动成藏(约16 Ma以来),第三期为天然气晚期充注(约10 Ma以来
Abstract:
The hydrocarbons geneses and accumulation characteristics of Baiyun sag in deep water area of Pearl River Mouth basin were dissected precisely by using the experimental analysis techniques of organic geochemistry and fluid inclusions, and the results show that the biological source compositions of hydrocarbons discovered in Baiyun sag shows an obvious north-south zonation. Among them, the sedimentary environments of crude oil sources in north Baiyun sag, east Baiyun sag and east Baiyun sub-sag belong to weak oxidizing environment. The biological source compositions are mainly terrestrial higher plants, natural gas is derived from the mixed sources, and oil and gas are mainly from the shallow lacustrine-delta facies mudstone of Wenchang-Enping Formations. While in west Baiyun sub-sag and south Baiyun sag, the sedimentary environment of crude oil source is weak reducing environment, the biological source composition is mainly lake algae, the natural gas is oil-type gas, and oil and gas are mainly from shallow - semi-deep lacustrine mudstone of Wenchang-Enping Formations. The crude oil in Baiyun sag has undergone different degrees of gas washing and the secondary transformation of evaporation and fractionation. Among them, the crude oil in the nose uplift zone of east Baiyun sag has generally undergone the later gas washing transformation, and the crude oil in Baiyun sag has mainly undergone evaporation and fractionation, while the crude oil in east Baiyun sub-sag, north Baiyun sag and east Baiyun sag were not subjected to the later gas washing transformation. Baiyun sag has experienced three stages of oil and gas filling, the first stage is the depression stage(since about 23 Ma), the second stage is the Neotectonic movement stage(since about 16 Ma)and the third stage is the late stage of natural gas filling(since about 10 Ma

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备注/Memo

备注/Memo:
收稿日期:2020-03-04 改回日期:2020-06-10* “十三五”国家科技重大专项“珠江口盆地深水区古温压演化与油气生排聚过程(编号:2016ZX05026-003-006)”部分研究成果。 第一作者简介: 龙祖烈,男,工程师,主要从事油气地球化学和油气成藏研究。地址:广东省深圳市南山区后海滨路3168号中海油大厦A座(邮编:518054)。E-mail:longzl@cnooc.com.cn。
更新日期/Last Update: 2020-07-20