|本期目录/Table of Contents|

[1]程 熊,侯读杰,赵 喆,等.西湖凹陷天然气成因及来源分析*[J].中国海上油气,2019,31(03):50-60.[doi:10.11935/j.issn.1673-1506.2019.03.006]
 CHENG Xiong,HOU Dujie,ZHAO Zhe,et al.Analysis on the genesis and source of natural gas in Xihu sag, East China Sea basin[J].China Offshore Oil and Gas,2019,31(03):50-60.[doi:10.11935/j.issn.1673-1506.2019.03.006]
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西湖凹陷天然气成因及来源分析*()

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

卷:
第31卷
期数:
2019年03期
页码:
50-60
栏目:
东海盆地油气勘探开发成果专辑
出版日期:
2019-06-25

文章信息/Info

Title:
Analysis on the genesis and source of natural gas in Xihu sag, East China Sea basin
文章编号:
1673-1506(2019)03-0050-11
作者:
程 熊12 侯读杰12 赵 喆12 姜玉涵12 周心怀3 刁 慧3 陈晓东3 杨丽杰12 董立成12
1. 中国地质大学(北京)能源学院 北京 100083; 2. 中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室 北京 100083; 3. 中海石油(中国)有限公司上海分公司 上海 200335
Author(s):
CHENG Xiong12 HOU Dujie12 ZHAO Zhe12 JIANG Yuhan12 ZHOU Xinhuai3 DIAO Hui3 CHEN Xiaodong3 YANG Lijie12 DONG Licheng12
1. School of Energy Resources, China University of Geosciences, Beijing 100083, China; 2. Key Laboratory for Marine Reservoir Evolution and Hydrocarbon Abundance Mechanism(Ministry of Education)at China University of Geosciences, Beijing 100083, China; 3. CNOOC China Limited, Shanghai Branch, Shanghai 200335, China
关键词:
西湖凹陷 天然气 轻烃 成熟度 族群划分 气源对比
Keywords:
Xihu sag natural gas light hydrocarbons maturity group classification gas source correlation
分类号:
TE133+.1
DOI:
10.11935/j.issn.1673-1506.2019.03.006
文献标志码:
A
摘要:
东海盆地西湖凹陷天然气资源丰富,但其成因与来源一直存在较大争议。综合分析天然气组分、碳同位素组成、轻烃指纹以及天然气伴生凝析油地球化学特征,对西湖凹陷天然气的成因、热演化程度与族群划分进行了探讨,在此基础上利用不同烃源岩热模拟产物碳同位素特征与伴生凝析油特征进行了气源分析。西湖凹陷天然气为煤型气,形成于中等成熟—高成熟热演化阶段,对应的Ro值约为1.16%~1.87%。西胡凹陷天然气可以划分为4个族群,其中A、B与C类天然气分别分布于平湖斜坡、黄岩构造带和宁波构造带,D类天然气零星分布于平湖斜坡。西湖凹陷A类天然气主要来源于平湖组煤,B类天然气主要来源于平湖组泥岩,C类天然气主要来源于高热演化阶段的平湖组煤,D类天然气中有3个样品来源于平湖组炭质泥岩,1个气样可能有中下始新统烃源岩贡献。本文研究结果可为西湖凹陷的天然气勘探提供理论依据和技术支持。
Abstract:
The Xihu sag in East China Sea basin is rich in natural gas resources, but the genesis and sources of the gas are still controversial. Through comprehensive analysis of natural gas composition, carbon isotope composition, light hydrocarbon fingerprints, geochemical characteristics of natural gas associated condensate, etc., the genesis, thermal evolution degree and group classification of natural gas in Xihu sag have been studied. On this basis, gas source analysis has been carried out by utilizing the carbon isotope characteristics of thermal simulation products of different source rocks and the characteristics of associated condensates. The natural gas in Xihu sag is coal-type gas formed in the middle mature- high mature thermal evolution stages, and the corresponding Ro values are about 1.16%~1.87%. The natural gas in Xihu sag can be divided into four groups, among which, Classes A, B and C natural gases are distributed in the PH slope, HY structural belt and NB tectonic belt respectively, and Class D natural gas is distributed in the PH slope sparsely. The Class A natural gas in Xihu sag is mainly originated from coal in the Pinghu Formation, Class B natural gas is mainly originated from mudstone in the Pinghu Formation, Class C natural gas is mainly originated from the Pinghu Formation coal in high thermal evolution stage, and 3 samples from Class D natural gas are sourced from carbonaceous mudstone in the Pinghu Formation, 1 sample may be originated from the Middle-Lower Eocene source rocks. The research results in this paper can provide theoretical reference and technical supports for natural gas exploration in Xihu sag.

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备注/Memo

备注/Memo:
*“十三五”国家科技重大专项“西湖凹陷大中型气田油藏地球化学研究(编号:2016ZX05027-001-003)”部分研究成果。
第一作者简介: 程熊,男,博士研究生,主要从事油气地球化学研究。地址:北京市海淀区学院路29号中国地质大学(北京)(邮编:100083)。E-mail:xcheng2015@cugb.edu.cn。
通信作者简介: 侯读杰,男,教授,博导,从事石油地质与地球化学研究与教学工作。地址:北京市海淀区学院路29号中国地质大学(北京)(邮编:100083)。E-mail:houdj@189.cn。
更新日期/Last Update: 2019-05-20