摘要
自中新世晚期(大约5.2 Ma B.P.)以来,渤海海域盆地进入裂后构造活动最活跃的新构造运动时期,致使渤海海域沉降沉积中心迁移、玄武岩喷发、地震频繁活动、深大断裂继承性活动和大量晚期断裂的生成。该期构造运动海域强度明显高于相邻陆域,呈现出幕式活动的特征。在新构造运动的影响和控制作用下,渤海海域含油气盆地形成了一批大型浅层背斜圈闭,油气输导体系得到优化,烃源岩晚期快速生烃,油气幕式充注成藏。本文以PL19-3油气藏为例,初步总结了渤海新构造运动控制油气晚期快速动态成藏的模式。
Since late miocene （about 5.2 Ma B. P. or so）, the tectonic evolution of the Bohai Sea Basin had entered into the neotectonic period which was the most active period after rifting tectonic movement. The neotectonism of the Bohai sea had brought about migration of the sedimentation center, basalt breaking forth, frequent earthquakes, deep and huge faults inheriting activity, and a lot of shallow faults being created. There has been active and intermittent stages of tectonic movements in Bohai sea neotectonism, and the movement intensity of the sea area was stronger than that of the land area. Being influenced and controlled by the Bohai sea neotectonism, many tectonic anticline traps had been formed, the oil and gas transporting systems had been optimized, hydrocarbon had been generated fast from source rocks, and oil and gas reservoirs had been formed in episodic charging process during late cenozoic period. Illustrated by the example of PL19-3 oil and gas reservoir, authors summarized late and dynamic hydrocarbon accumulation models controlled by the Bohai Sea neotectonism.
出处
《地球物理学进展》
CSCD
北大核心
2009年第6期2135-2144,共10页
Progress in Geophysics
基金
中央公益性研究院所基本科研业务专项(2060302)
山东省地震局博士预研基金联合资助
关键词
渤海
新构造运动
晚期成藏
成藏模式
Bohai sea, neotectonism, late hydrocarbon accumulation, hydrocarbon accumulation model
