DISCUSSION ON THE CONDITION OF FORMING PETROLEUM TRAPS IN SYNCLINE
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摘要: “油气从低处往高处运移,并聚集在背斜之中,低部位向斜无油气聚集”,这就是众所周知的背斜理论。但随着勘探的深入和扩大,大量非背斜油气藏的发现,背斜理论已逐渐被圈闭理论所代替。油气富集的机理,其关键之一,并不在于是背斜还是向斜,而是在于有各种圈闭存在。Abstract: Petroleum traps in syncline can de divided into four types: (l)syncli-nal bedded traps; (2) synclinal locally sealed traps; (3) synclinal subtle traps;(4)synclinal flank-sheltered traps. At present,lens,lithologic pinch-out, fissured and subtle petroleum traps have been found in the synclines of Songliao, Bohai Gulf and Sichuan Basin. It is predicted that new types of petroleum trap occupying a large area will be found in the syncline.
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[1] 戴金星,向斜中的油、气藏,石油学报,1983年,第4期. [2] 徐和笙,四川盆地潜伏构造分析,天然气工业,1982年,第3期. -
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