摘要
探讨四川盆地东南部涪陵地区上二叠统长兴组天然气的成因及来源。通过天然气地球化学分析手段对涪陵地区长兴组天然气特征进行研究,并且与川东邻区气田进行对比分析。结果表明,涪陵地区长兴组气藏天然气总体为高-过成熟的海相热成因气,生气干酪根类型主要为Ⅱ型。涪陵地区长兴组天然气的气源岩主要为上二叠统吴家坪组,存在部分志留系烃源岩生成的天然气。
Geochemical analysis of Upper Permian Changxing Formation natural gas is carried out in order to explore its genesis and source in the Fuling area of southeastern Sichuan and compare its characteristics with that in the eastern Sichuan gas field.It shows that the natural gas in the area belongs to high-over-mature marine thermogenic gas and the typeⅡkerogen is the main gas-generation kerogen.The Upper Permian Wujiaping Formation source rocks are considered as the natural gas source rocks of the Changxing Formation gas reservoir in the Fuling area,and some Silurian source rocks make contribution to the formation of natural gas in the Changxing Formation gas reservoir.
作者
林雪梅
魏全超
郑晶
罗彦萍
徐云强
曾兵
LIN Xuemei;WEI Quanchao;ZHENG Jing;LUO Yanping;XU Yunqiang;ZENG Bing(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China;Exploration Company of SINOPEC,Chengdu 610041,China)
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第1期28-34,共7页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家科技重大专项(2017ZX05005-003)
中国石化重大科技项目(P16082)
关键词
二叠系
长兴组
碳同位素
气源
混源
涪陵地区
Permian
Changxing Formation
carbon isotope
gas source
mixed-source
Fuling area
