摘要
Abstract
Igneous rocks are distributed in many oil-producing rift basins in the eastern China. A large quantity of basic intrusions, volcanoes and volcanic-clastics are found out in the source and reservoir rocks in the basins of Songliao,Bohai Bay, Erlian, Subei, Nanxiang-Jianghan, Sanshui, Pearl River Mouth, East China Sea and Yinggehai basins, as well as in non-oil-producing basins, such as the Northeast-Inner Mongolia and Ningxia-Gansu rifts.Oil and gas accumulations are commonly with focus on the area of igneous rocks and non-hydrocarbon reservoirs.For example, carbon dioxide reservoirs are also found around the area. Basalt and basaltic clastic-rocks which erupted in depositional environment of source rocks controlled distributions of organic matter, and diabase which intruded in the source rocks was made early and a large quantity of hydrocarbon generated from the source rocks.Meanwhile, multiple traps and oil/gas reservoirs were developed in the area of igneous rocks, because there were large reservoir spaces, good hydrocarbon and non-hydrocarbon charge, as well as good preservation for the traps.Case study is introduced from Dongying depression and other basins.关键词
裂谷盆地/火成岩/火山活动/油气生成/成藏作用分类
能源科技
