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直罗油田位于陕北斜坡中南部,是含油气盆地中勘探程度较低的区域。该区域主要为东西走向的大型单斜。研究区构造简单,局部存在鼻隆构造,有利于油气的富集。对研究区延长组长8段油藏特征进行深入全面的研究,研究区长8油层组主要为前缘三角洲沉积体系,物源来自于东北方向。岩石学特征研究显示其成分主要由长石,石英和岩屑构成,其中长石含量最高。研究区容易形成岩性油藏。
The Zhiluo Oilfield is located in the central and southern part of the northern slope of northern Shanxi, and is an area of low exploration degree in petroliferous basins. The area is mainly a large monoclinic with an east-west orientation. The study area is simple in structure and local exists in the nose and lung structure, which is good for oil and gas enrichment. In-depth and comprehensive study is carried out on the characteristics of reservoir extension of 8 members in the study area. The study area is mainly composed of the delta front depositional system and the provenance from the northeast direction. Petrological characteristics of the study shows that its composition is mainly composed of feldspar, quartz and cuttings, with the highest content of feldspar. The study area is prone to lithologic reservoirs.