[an error occurred while processing this directive] 高校地质学报 2018, 24(4) 573- DOI:     ISSN: 1006-7493 CN: 32-1440/P

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本文关键词相关文章
&ldquo
拖曳&rdquo
生排烃
油气运移
烃源岩
辽东湾坳陷
郯庐断裂带
走滑断层
本文作者相关文章
蒋子文
罗静兰
王嗣敏*
华晓莉
牛新杰
田亚
王晓蕾
崔凯
PubMed
Article by Jiang Z
Article by Luo J
Article by Wang S
Article by Hua X
Article by Niu X
Article by Tian Y
Article by Wang X
Article by Cui K
郯庐断裂新生代构造演化及其对烃源岩生排烃的影响:以辽东湾坳陷辽中凹陷为例
蒋子文,罗静兰,王嗣敏*,华晓莉,牛新杰,田亚,王晓蕾, 崔凯
摘要: 郯庐断裂带是渤海海域重要的活动断裂带,控制着该地区油气成藏的生储盖运圈保条件。以辽东湾坳陷辽中凹陷为研
究对象,利用三维地震资料、平衡剖面分析对郯庐断裂几何学特征、演化特征进行研究;在此基础上,分析郯庐断裂走滑活
动对烃源岩发育、分布、演化及生排烃的影响。辽东湾坳陷新生代构造演化分为为五个构造演化阶段、三个构造演化旋回。
郯庐断裂走滑活动可错开先期、同期发育的烃源岩,改变烃源岩位置及生烃潜力的空间分布,有利于形成局部水体更深的还
原环境,发育生烃潜力更大的烃源岩。走滑活动使断裂带附近地温梯度和大地热流升高,有利于降低生烃门限。郯庐断裂不
同时期不同部位具有不同的活动性质,对油气运移起封闭或者运移通道作用。东营组沉积期晚期和明化镇组下段沉积期至今
的断裂走滑活动与烃源岩大量生排烃期、油气成藏时期具有良好的匹配关系,提出郯庐断裂走滑活动可形成“拖曳”生排烃
现象,使与走滑断层相关的圈闭中即使烃源岩条件较差亦可能具有勘探价值,从而突破了传统的油气勘探思路。
关键词 &ldquo   拖曳&rdquo   生排烃   油气运移   烃源岩   辽东湾坳陷   郯庐断裂带   走滑断层  
Tectonic Evolution of the Tan-Lu Fault in the Cenozoic and Its Effect on Hydrocarbon Generation and Expulsion of Source Rocks: A Case Study of the Liaozhong Sag (Liaodong Bay Depression)
JIANG Ziwen, LUO Jinglan, WANG Simin*, HUA Xiaoli, NIU Xinjie, TIAN Ya, WANG Xiaolei, CUI Kai
Abstract: The Tan-Lu fault zone is an important active fault zone in the Bohai Sea area, which controls the conditions of regional oil
and gas accumulation. Based on a case study in the Liaozhong sag of the Liaodong Bay Depression, the geometrical and evolutionary
characteristics of the Tan-Lu fault were studied by using 3D seismic data and the balanced section technique. Based on the results, the
influence of the strike-slip activity of the Tan-Lu fault on the development, distribution, evolution, generation and expulsion of source
rock was addressed. Results show that the tectonic evolution of the Liaodong Bay depression in the Cenozoic is divided into five stages
and three cycles. The strike-slip activity of the Tan-Lu fault staggers the source rocks developed in the early and synchronous stages,
changes the spatial distribution of source rock and hydrocarbon generation potential, and makes it beneficial to form reducing
environments and develop source rocks with higher hydrocarbon generation potential. The strike-slip activity increases the geothermal
gradient and the geothermal heat flow near the fault zone, which is conducive to reducing the hydrocarbon generation threshold.
Different parts of the Tan-Lu fault vary in activities in periods, and they act as close or open channels for hydrocarbon migration. The
Tan-Lu fault strike-slip activity from the late Dongying and early Minghuazhen stages to the present has a good matching with the main
hydrocarbon generation and accumulation periods. It is suggested that the strike-slip activity of the Tan-Lu fault forms a
“towed-pattern” of the hydrocarbon generation and expulsion. As a result, the traps with relatively poor source rock conditions may
also have exploration value, which broadens the ideas of oil and gas exploration.
Keywords: “towed-pattern”of the hydrocarbon generation and expulsion   hydrocarbon migration   source rock   Liaodong Bay depression;
Tan-Lu fault zone
   strike-slip fault  
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