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1983年10月,安塞地区塞1井测试出油,12月试采,日产油10多方。基1井位于另两个油田之间,这一新发现填补了这块空白地区。之后,在发现井周围又钻了七口井,试油四口,其中三口见油,从而证实了这个新发现。安塞地区出油层为三迭系延长组。该组地层在陕甘宁盆地广泛含油,但渗透率极低,成为开发中的一大难题。安塞地区延长组(长2、长6油层)出油表明,在盆地内部有渗透率相对
In 1983 October, Ansai area plug a well test oil, test production in December, Nissan oil more than 10 parties. Well 1 is located between the other two fields, this new discovery to fill this blank area. After that, another seven wells were drilled around the discovery wells and tested for oil, of which three were oil-bearing, confirming this new discovery. Ansai area out of Triassic oil extension group. This group of formations is extensively oil-bearing in the Shan-Gan-Ning basin, but its permeability is extremely low, which has become a major challenge in development. The extension of the Ansai area (Chang 2 and Chang 6 reservoirs) shows that there is permeability in the basin