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研究了白音查平凹陷石油地质基本特征,指出该凹陷腾格尔组生油条件良好,烃源岩有机质丰度较高、具较强的生烃能力,与邻区凹陷相比较,该凹陷生油岩质量优于额仁淖尔凹陷;凹陷内区域性盖层发育,油气保存条件好,烃源岩大量排烃期处于断裂活动期之后,油气可保存在生油区附近的扇三角洲砂体中。文中对该区的有利勘探目标进行了预测,认为:①扇三角洲砂体邻近生油区,是有利的储集体;②腾格尔组的生储盖配置好,是有利的勘探目的层;③有利勘探目标分布在西部洼陷白音断层和塔拉南断层下降盘;④白音查干凹陷与额仁淖尔凹陷的油气成藏基本条件各有优劣,二者的勘探前景相当。
The basic characteristics of petroleum geology in Baiyinchaping depression are studied. It is pointed out that the Tengger Formation in this depression has good oil generation conditions, high organic matter abundance and strong hydrocarbon generation ability. Compared with the adjacent depressions, The quality of oil-bearing rocks is better than that of Neernur depression. The regional caprock in the depression is well developed and the conditions of oil and gas reservoirs are good. After a large number of hydrocarbon source rocks are in active stage, the hydrocarbon reservoirs can be preserved in the fan delta sand body in. In the paper, the favorable prospecting targets of this area are predicted. It is considered that: ① The fan delta sand body is favorable for reservoirs adjacent to the oil producing area; ② The Tengger Formation is well-positioned for exploration and exploration; ③ The favorable exploration targets are located in the Baiyin fault in the western depression and the descent disk in the Talanan fault. (4) The basic conditions of hydrocarbon accumulation in the Baiyinchagan depression and the Erren’erg depression have advantages and disadvantages, both of which have similar exploration prospects.