鄂尔多斯盆地中川区长6油层组油藏富集规律

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以前的研究一直认为鄂尔多斯盆地陕北斜坡东部延长组油藏仅受到沉积相的控制,其圈闭类型为岩性圈闭。但笔者经过研究发现,陕北斜坡中川区长6油层组油藏并不仅仅受到沉积相带的控制,而是受沉积相、构造、盖层以及油源条件等综合因素的控制。作者分别从沉积相、构造、盖层、油源条件四个方面分析了对于油藏分布的影响,认为中川区长6油层组油藏是一个以构造-岩性油藏为主,岩性油藏次之的复合油藏。 Previous studies have always held that the Yanchang Formation reservoir in the eastern part of the northern Shaanxi slope of the Ordos Basin is controlled by sedimentary facies and has a trap type of lithologic trap. However, the author has found through research that the reservoir of Chang 6 oil layer in Zhongchuan area of ​​northern Shaanxi slope is not controlled by sedimentary facies only, but controlled by comprehensive factors such as sedimentary facies, structure, cap rock and oil source condition. The author analyzes the influence on the reservoir distribution from sedimentary facies, structure, cap rock and oil source conditions respectively. It is considered that the reservoir of Chang 6 oil layer in Zhongchuan is a tectonic-lithologic oil reservoir, Hidden second of the composite reservoir.
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