构造活动对富生油凹陷烃源岩的定量控制——以中国近海古近系为例

doi:10.7623/syxb201403006

石油学报 ›› 2014, Vol. 35 ›› Issue (3): 455-461.DOI: 10.7623/syxb201403006

构造活动对富生油凹陷烃源岩的定量控制——以中国近海古近系为例

姜雪, 吴克强, 刘丽芳, 杨树春

中海油研究总院北京 100027

收稿日期:2013-11-12 修回日期:2014-03-10 出版日期:2014-05-25 发布日期:2014-04-11
通讯作者: 吴克强，男，1970年8月生，1992年获中国地质大学（武汉）学士学位，1995年获中国地质大学（武汉）硕士学位，现为中海油研究总院勘探研究院勘探室主任，高级工程师，主要从事中国近海油气勘探工作。Email：wukq@cnooc.com.cn
作者简介:姜雪，女，1981年3月生，2004年获吉林大学学士学位，2010年获中国石油大学（北京）博士学位，现为中海油研究总院地质工程师，主要从事沉积学及油气成藏机理方面的研究。Email：jiangxue@cnooc.com.cn
基金资助:
国家重大科技专项“近海大中型油气田形成条件与分布”（2011ZX05023-006）资助。

Quantitative control of tectonic activity for source rocks in rich oil kitchen sags：a case study of Paleogene in China offshore

Jiang Xue, Wu Keqiang, Liu Lifang, Yang Shuchun

CNOOC Research Institute, Beijing 100027, China

Received:2013-11-12 Revised:2014-03-10 Online:2014-05-25 Published:2014-04-11

摘要/Abstract

摘要：

以中国近海古近系3个主要富生油凹陷所发育的湖相烃源岩为研究对象，从沉降速率、沉积速率/沉降速率、断层活动速率、伸展率等方面讨论了构造运动对烃源岩发育的定量控制。分析表明，构造运动对不同水体环境下烃源岩发育的控制有一定差异：在淡水—微咸水环境下，沉降速率达到100 m/Ma，沉积速率/沉降速率介于0.7~1.0，断层活动速率大于100 m/Ma，伸展率达到4% 就会有好烃源岩发育；典型咸化水体中，沉降速率达到20 m/Ma，沉积速率/沉降速率介于0.6~1.0，伸展率达到2% 就会有好的烃源岩发育。中国近海古近系富生油凹陷中，沉降速率高值者（大于100 m/Ma）往往占凹陷的比例大于60%，断层活动速率高值者（大于100 m/Ma）占凹陷的比例大于50%。

关键词: 富生油凹陷, 湖相烃源岩, 沉降速率, 断层活动速率, 伸展率

Abstract:

Focused on the Paleogene lacustrine source rocks in three main China offshore rich oil kitchen sags, the quantitative control of tectonic factors on the evolution of source rocks is explored in terms of subsidence rate, deposition rate/ subsidence rate, fault active rate and extensional proportion, etc. The results show that tectonic movement plays a different role in controlling the evolution of source rocks in various water environments. In fresh to brackish water environment, there exists well-developed source rocks when subsidence rate is 100 m/Ma, deposition rate/ subsidence rate is within the range of 0.7-1.0, fault active rate is greater than 100 m/Ma and extensional proportion is up to 4% ; in saline water environment, there exists well-developed source rocks when subsidence rate is 20 m/Ma, deposition rate/subsidence rate is within the range of 0.6-1.0 and extensional proportion is up to 2%. In the China offshore rich oil kitchen sags, the proportion of high subsidence rates (>100 m/Ma) accounts for over 60%, and that of high fault active rates (>100 m/Ma) accounts for over 50%.

Key words: rich oil kitchen sags, lacustrine source rocks, subsidence rate, fault active rate, extensional proportion

中图分类号:

TE112.12

姜雪, 吴克强, 刘丽芳, 杨树春. 构造活动对富生油凹陷烃源岩的定量控制——以中国近海古近系为例[J]. 石油学报, 2014, 35(3): 455-461.

Jiang Xue, Wu Keqiang, Liu Lifang, Yang Shuchun. Quantitative control of tectonic activity for source rocks in rich oil kitchen sags：a case study of Paleogene in China offshore[J]. ACTA PETROLEI SINICA, 2014, 35(3): 455-461.

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构造活动对富生油凹陷烃源岩的定量控制——以中国近海古近系为例

Quantitative control of tectonic activity for source rocks in rich oil kitchen sags：a case study of Paleogene in China offshore

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