[1]宋 言,刘世丽,高先志,等.盐城凹陷阜三段原油地球化学特征及油源对比[J].复杂油气藏,2023,16(01):26-34.[doi:10.16181/j.cnki.fzyqc.2023.01.005]
 SONG Yan,LIU Shili,GAO Xianzhi,et al.Geochemical characteristics of crude oil and oil source correlation of the third member of Funing Formation in Yancheng Sag[J].Complex Hydrocarbon Reservoirs,2023,16(01):26-34.[doi:10.16181/j.cnki.fzyqc.2023.01.005]
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盐城凹陷阜三段原油地球化学特征及油源对比()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
16卷
期数:
2023年01期
页码:
26-34
栏目:
油气勘探
出版日期:
2023-03-25

文章信息/Info

Title:
Geochemical characteristics of crude oil and oil source correlation of the third member of Funing Formation in Yancheng Sag
作者:
宋 言12刘世丽3高先志12李鹤永3唐远涛12薛 锴12王红梅12王永辉12
1.油气资源与探测国家重点实验室中国石油大学(北京),北京 102249;2.中国石油大学(北京)地球科学学院,北京 102249;3.中国石化江苏油田分公司勘探开发研究院,江苏 扬州 225009
Author(s):
SONG Yan12LIU Shili3GAO Xianzhi12LI Heyong3TANG Yuantao12XUE Kai12WANG Hongmei12WANG Yonghui12
1. State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum (Beijing),Beijing 102249,China;2.College of Geosciences,China University of Petroleum (Beijing),Beijing 102249,China;3.Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China
关键词:
低熟油地球化学油源对比阜三段盐城凹陷
Keywords:
low mature oilgeochemistryoil source correlationthe third member of Funing FormationYancheng Sag
分类号:
TE122.1
DOI:
10.16181/j.cnki.fzyqc.2023.01.005
文献标志码:
A
摘要:
盐城凹陷阜三段常规油藏的发现证实了盐城凹陷仍具有较大的勘探潜力,但受勘探程度的影响,缺乏系统研究,存在阜三段原油成因与阜二段烃源岩主要供烃亚段尚不明确的问题。通过分子地球化学分析,结合实际地质条件,对阜三段原油地球化学特征及来源开展研究。研究结果表明:阜三段原油为低熟稠油,母质来源为混合来源,形成于半咸化—咸化、还原—强还原环境,是生油早期阶段的产物;依据生标物特征可将阜二段烃源岩分为3类,E1 f22亚段烃源岩成熟度低,形成于低咸度—还原环境,具有低孕(升)甾烷/规则甾烷、低三环萜/五环萜的特征。E1 f23、E1 f24、E1 f25亚段烃源岩成熟度低,形成于高咸度—强还原环境,具有低孕(升)甾烷/规则甾烷、高三环萜/五环萜比值的特征。E1 f26亚段烃源岩成熟度偏高,形成于较高咸度—还原环境,具有高孕(升)甾烷/规则甾烷,低三环萜/五环萜比值的特征;阜三段原油可分为2类原油,以Ⅱ类原油为主。综合油源对比结果与实际地质条件认为,Ⅰ类原油主要来自E1 f22亚段烃源岩。Ⅱ类原油主要来自E1 f23、E1 f24亚段烃源岩,E1 f23、E1 f24亚段烃源岩为阜三段原油的主要供烃亚段。
Abstract:
The discovery of conventional oil reservoirs in the third member of the Funing Formation in Yancheng Sag confirms that the Yancheng Sag still has a large exploration potential. However,due to the extent of exploration,there is a lack of systematic research,and there is a problem that the genesis of crude oil in the third member of Funing Formation,and the main hydrocarbon supply sub-member of hydrocarbon source rock in the second member of Funing Formation are still unclear. Through molecular geochemical analysis,combined with the actual geological conditions,it was studied the geochemical characteristics and sources of crude oil in the third member of the Funing Formation. The results show that the crude oil in the third member of the Funing Formation is low maturity heavy oil with mixed parental source,which formed in the environment of semi-salty and salinization,reduction-strong reduction,and is a product of the early oil generation stage. According to the characteristics of biomarkers,the hydrocarbon source rocks of the second member of Funing Formation can be divided into three categories. The hydrocarbon source rocks of the E1 f22 sub-member are low maturity,and formed in a low-salt-reducing environment,with a low sterane/regular sterane ratio and low tricyclic terpene/pentacyclic terpene ratio. The hydrocarbon source rocks of E1 f23,E1 f24,and E1 f25 sub-member have low maturity and formed in a high salinity-strong reduction environment,with a low sterane/regular sterane ratio and high tricyclic terpene/pentacyclic terpene ratio. The hydrocarbon source rocks of the E1 f26 sub-member have a high maturity,and formed in a high salinity-reducing environment,and are characterized by a high sterane/regular sterane ratio and low tricyclic terpene/pentacyclic terpene ratio. The crude oil in the third member of the Funing Formation can be divided into two types,mainly Ⅱ type crude oil. Based on the oil source correlation results and actual geological conditions,it is concluded that the type Ⅰ crude oil mainly comes from E1 f22 sub-member source rock. The type Ⅱ crude oil mainly comes from the source rocks of E1 f23 and E1 f24 sub-members,and the source rocks of E1 f23 and E1 f24 sub-members are the main hydrocarbon supply sub-members of the crude oil in the third member of Funing Formation.

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备注/Memo

备注/Memo:
收稿日期:2022-07-09;改回日期:2022-10-20。
第一作者简介:宋言(1997—)。在读博士研究生。石油大学(北京)地质资源与地质工程专业。E-mail: 2021310026@student.cup.edu.cn。
基金项目:中国石化江苏油田分公司科技项目“盐城凹陷阜宁组油藏成藏主控因素与勘探潜力研究”(JS21002);中国石化科技部项目“苏北盆地陆相页岩油富集条件与勘探评价研究”(P21113)。
更新日期/Last Update: 2023-06-02