摘要
本文从中国各个地质时期的地壳运动和沉积古地理出发,综合分析了中国陆相含油气盆地的形成与演化特点提出了二叠纪湖盆发育于新疆北部,晚三叠世湖盆主要发育于鄂尔多斯地区,侏罗纪中国中、西部大面积沉降,发育众多的大型湖盆,水域面积大,烃源岩发育。中、西部湖盆较东部发育是寻找大油气田的有利地地区。早白垩世晚期以后,中国西部上升而东部开始沉陷,早白垩世晚期发育了东北松辽大湖盆。早第三纪中国西部急剧抬升,东部、海上进一步沉陷,发育了渤海湾、苏北、江汉和海上陆棚诸多湖盆,是新生代寻找大油气田的有利地区。
Based on the study on crustal movements and sedimentary paleogeography througn geological time, this paper analyzes the formation and evolution of terrestrial petroleum basins in China and the direction for discovering large oil-gas fields. The author proposes that Permian lacustrine basins were developed in northern Xinjiang, Late Triassic lacustrine basins were developed in Shaanxi-Gansu-Ningxia region, numerous Jurassic large lacustrine basins with huge water areas and hydrocarbon source rocks were developed in the central-western part of China, due to subsidence in wide areas. It is considered that large lacustrine basins in the central-western part of China are the exploration plays for discovering large gas fields. After late Late Cretaceous, the western part of China started to uplift and the eastern part to subside. The Songliao lacustrine basin was developed in the late Late Cre- taceous. In the early Tertiary, the western part was rapidly uplifted, and the eastern part further subsided. The Bohai Bay, Subei, Jianghan and other offshore basins were developed, which are the Cenozoic exploration plays for discovering large gas fields.
关键词
中国
陆相盆地
含油气盆地
盆地演化
油气勘探
China, terrestrial basin, petroleum basin, basin evolution, hydrocarbon exploration, large oil/gas fields
