[1]严德天 陆 江 魏小松 何卫军 秦春雨 李 潼.断陷湖盆富有机质页岩形成环境及主控机制浅析——以涠西南凹陷流沙港组二段为例[J].三才(TM)期刊,2019,29(05):21-29.[doi:10.11935/j.issn.1673-1506.2019.05.003]
 YAN Detian LU Jiang WEI Xiaosong HE Weijun QIN Chunyu LI Tong.Sediment environment and major controlling factors of organic-rich shales in the rift lake basin:A case study of the 2nd Member of Liushagang Formation of the Weixinan sag[J].HISTORICAL RESEARCH IN ANHUI,2019,29(05):21-29.[doi:10.11935/j.issn.1673-1506.2019.05.003]
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断陷湖盆富有机质页岩形成环境及主控机制浅析——以涠西南凹陷流沙港组二段为例()
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《三才(TM)期刊》[ISSN:1008-0341/CN:37-1280/R]

卷:
第29卷
期数:
2019年05期
页码:
21-29
栏目:
油气勘探
出版日期:
2019-10-01

文章信息/Info

Title:
Sediment environment and major controlling factors of organic-rich shales in the rift lake basin:A case study of the 2nd Member of Liushagang Formation of the Weixinan sag
文章编号:
1673-1506(2019)05-0021-09
作者:
严德天1 陆 江2 魏小松1 何卫军2 秦春雨1 李 潼1
(1. 中国地质大学(武汉)构造与油气教育部重点实验室 湖北武汉 430074; 2. 中海石油(中国)有限公司湛江分公司 广东湛江 524034)
Author(s):
YAN Detian1 LU Jiang2 WEI Xiaosong1 HE Weijun2 QIN Chunyu1 LI Tong1
(1.Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan, Hubei 430074, China; 2.CNOOC China Limited, Zhanjiang Branch, Zhanjiang, Guangdong 524034, China)
关键词:
断陷湖盆 富有机质页岩 流沙港组二段 涠西南凹陷
Keywords:
rift lake basin organic-rich shales the 2nd Member of the Liushagang Formation Weixinan sag
分类号:
TE122.2
DOI:
10.11935/j.issn.1673-1506.2019.05.003
文献标志码:
A
摘要:
涠西南凹陷流沙港组二段富有机质页岩具有分布广、厚度大、丰度高、有机质类型好等特点,但其发育控制因素存在争议。利用钻井、地震和古生物等资料,对该套富有机质页岩形成的主要控制因素进行了分析,结果表明:该时期温暖湿润的古气候控制着湖盆水生生物尤其是藻类的发育,进而影响湖盆古生产力的高低; 构造和断裂活动的强弱控制湖盆可容纳空间的变化和湖盆底部水体的氧化还原特征,进而决定富有机质页岩的分布和保存; 古气候、古构造和古湖盆环境综合控制了流沙港组二段富有机质页岩的发育,其形成模式可概括为温暖湿润气候、盆地快速沉降、湖盆表层水体高生产力和底层水体缺氧还原环境。
Abstract:
The 2nd Member of Liushagang Formation has a widespread, large thickness, high organic carbon content and excellent organic matter type in the Weixinan sag, however, its controlling factor is still controversial. Based on the data of drilling, earthquake and paleontology, the main controlling factors of the organic shale are analyzed. The results suggest that aquatic organism in the lake was controlled by warm and humid climate during Eocene, and the productivity level of the lake was also affected. The structure and fault activity control the change of accommodation space and the redox characteristics of the bottom water in the lake, and then determine the distribution and preservation of organic shale. The paleoclimate, paleostructure and the paleolake environment have comprehensively controlled the development of the 2nd Member organic-rich shales in the Liushagang Formation, and the formation pattern can be summarized as the warm and moist climate, the rapid settlement of the basin, the high productivity of the surface water and the oxygen-deficient reduction environment of the bottom water.

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备注/Memo

备注/Memo:
*“十三五”国家科技重大专项“南海西部海域低渗油藏勘探开发关键技术研究(编号:2016ZX05024-006)”、国家自然科学基金“富有机质页岩类型及其沉积—成岩控制因素(编号:41690131)”、高等学校学科创新引智计划(编号:B14031)部分研究成果。 第一作者简介: 严德天,男,教授,博士生导师,主要研究方向为石油地质学、沉积学与沉积地球化学、非常规油气资源勘探。地址:湖北省武汉市洪山区鲁磨路388号(邮编:430074)。E-mail:yandetian@cug.edu.cn。
更新日期/Last Update: 2019-10-01