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甘青藏含油气区面积约269.5×10~4km~2,是我国面积最大的一个含油气区。在9个沉降带中分布着32个含油气盆地,总面积达159×10~4km~2。它们都是长期发展的叠合型含油气盆地,叠合着中-上元古界、古生界、中生界和新生界多套海相、海陆交互相和陆相含油建造,并具备了多期非生物油气源的地质-构造条件。因本区自然地理条件非常恶劣,新构造运动十分强烈,以致目前其勘探程度很低,勘探效果也不理想。从四个方面对其含油气性进行了评价,旨在引起同志们的争论和思考,以利于本区油气勘探事业的发展。
Qinghai-Tibet oil and gas-bearing area of about 269.5 × 10 ~ 4km ~ 2, is China’s largest oil and gas area. There are 32 petroliferous basins distributed in 9 subsidence zones with a total area of 159 × 10 ~ 4km ~ 2. They are both long-developing, superimposed petroliferous basins that are superimposed with multiple sets of Meso-Upper Proterozoic, Paleozoic, Mesozoic and Cenozoic marine facies, marine-continental interaction facies, and continental oil-bearing formations Geological - tectonic setting of multi - stage non - biological hydrocarbon source. Due to the very poor natural and geographical conditions in this area, the neotectonic movement is so intense that the current exploration level is very low and the exploration result is not satisfactory. From four aspects of its oil and gas were evaluated, aims to arouse the gays debate and thinking, in order to facilitate the development of oil and gas exploration in this area.