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陕甘宁盆地是一个大型叠合盆地,它经历了中晚元古代一早古生代陆表海、晚古生代海陆过渡以及中新生代内陆湖相沉积阶段,发育多类型油气源岩。盆地的油气圈闭,中生界以隐蔽型油藏为主,古生界为构造型气藏,可划分出五个不同类型的油气聚集区,既具备中生代大型陆相盆地油气藏形成条件,又海相、海陆交互相地层天然气资源丰富,勘探领域广阔。
The Shanxi-Gansu-Ningxia Basin is a large superimposed basin. It experienced various stages of Mesozoic and early Paleozoic land-sea, late Paleozoic land-sea transition and Meso-Cenozoic inland lacustrine depositional stages, and developed multiple types of hydrocarbon source rocks. The oil and gas traps in the basin are mainly concealed reservoirs in the Mesozoic and the tectonic reservoirs in the Paleozoic. Five different types of oil and gas accumulation zones can be divided into two types. They not only have the conditions for the formation of reservoirs in the Mesozoic large continental basin, In addition, the marine facies, the sea-land interaction facies strata have abundant natural gas resources and vast exploration fields.