辽河坳陷台安-大洼断裂带新生代构造演化及油气成藏

单俊峰; 陈昌; 周晓龙; 方红

doi:10.3969/j.issn.1006-6535.2021.06.002

特种油气藏 >

2021 , Vol. 28 >Issue 6: 11 - 19

DOI: https://doi.org/10.3969/j.issn.1006-6535.2021.06.002

地质勘探

辽河坳陷台安-大洼断裂带新生代构造演化及油气成藏

单俊峰 ,
陈昌 ,
周晓龙 ,
方红

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中国石油辽河油田分公司,辽宁盘锦 124010

单俊峰(1968—),男,教授级高级工程师,1990年毕业于大庆石油学院地球物理专业,2007年毕业于中国地质大学(北京)矿产普查勘探专业,获博士学位,现主要从事油气预探部署及综合研究管理工作。

收稿日期: 2020-11-30

修回日期: 2021-10-08

网络出版日期: 2022-02-16

基金资助

中国石油重大科技专项“辽河油田千万吨稳产关键技术研究与应用”(2017E-16)

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Cenozoic Tectonic Evolution and Hydrocarbon Accumulation of Taian-Dawa Fault Zone, Liaohe Sag

Shan Junfeng ,
Chen Chang ,
Zhou Xiaolong ,
Fang Hong

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PetroChina Liaohe Oilfield Company, Panjin, Liaoning 124010, China

Received date: 2020-11-30

Revised date: 2021-10-08

Online published: 2022-02-16

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摘要

台安-大洼断裂带油气资源丰富,是辽河坳陷最重要的含油气区带之一。为探讨该区构造演化与油气成藏的关系,通过对断裂带的构造特征及演化进行分析,开展油气成藏模式研究,揭示了台安-大洼断裂带新生代构造演化对油气成藏的影响,进而指导断裂带勘探领域及目标的优选。研究结果表明:台安-大洼断裂带同时具有伸展拉张和走滑反转的双重构造特点,其构造演化划分为断陷期、断陷和右旋走滑期、坳陷期3个阶段。构造演化对断裂带的油气成藏具有重要的控制作用,其控制了沉降中心由北向南迁移、储集体发育、复式油气输导体系的形成以及断层活动与油气排烃的匹配关系。明确了断裂带北部和南部的油气成藏模式及有利勘探区,为断裂带下一步勘探方向部署提供了依据。

关键词： 构造演化; 新生代; 成藏模式; 大洼断层; 台安-大洼断裂带

本文引用格式

单俊峰 , 陈昌 , 周晓龙 , 方红 . 辽河坳陷台安-大洼断裂带新生代构造演化及油气成藏[J]. 特种油气藏, 2021 , 28(6) : 11 -19 . DOI: 10.3969/j.issn.1006-6535.2021.06.002

Abstract

With abundant oil and gas resources, Taian-Dawa Fault Zone is one of the most important hydrocarbon-bearing zones in Liaohe Sag. The tectonic characteristics and evolution of the Fault Zone were analyzed to explore the relationship between the tectonic evolution and hydrocarbon accumulation in the Fault Zone. A study was performed on hydrocarbon accumulation mode to work out the effect of Cenozoic tectonic evolution on hydrocarbon accumulation in Taian-Dawa Fault Zone, providing guidance in the optimization of exploration fields and targets of the Fault Zone. The results of the study showed that Taian-Dawa Fault Zone was characterized by both extensional and strike-slip inversed tectonics and its tectonic evolution was divided into three stages: faulting period, dextral slip period and depression period. The tectonic evolution significantly controlled the hydrocarbon accumulation in the Fault Zone, specifically controlling the migration of subsidence center from north to south, the reservoir development, the formation of complex petroleum migration pathways, and the matching between fault activities and hydrocarbon discharge. The hydrocarbon accumulation patterns and favorable exploration areas in the north and south of the Fault Zone were identified, providing a basis for the next exploration deployment in the Fault Zone.

Key words： tectonic evolution; Cenozoic; accumulation mode; Dawa Fault; Taian-Dawa Fault Zone

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