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文章主要从油页岩构造演化、沉积条件等方面,分析油页岩形成的原因、地层结构及分布特征,确定了中央构造带台地背景下稳定、闭塞、微咸水还原、浅水环境是油页岩形成、发育的有利条件。油页岩地层主要分布在安福屯-静北潜山带、东胜堡-静安堡潜山带和边台-曹台潜山带三个地区,油页岩地层自上而下细分为三个层组,上下层为油页岩发育段,中间为泥质岩夹砂岩、碳酸盐岩段,具有典型的“三明治”结构特征,并且由于季节性气候变化伴随相对干旱的蒸发环境,形成油页岩、碳酸盐岩和泥质岩等多种岩类共生和层间裂缝等储集空间,使烃源岩具有一定的储集层特征。
In this paper, the causes of oil shale formation, formation structure and distribution characteristics are analyzed from the aspects of tectonic evolution and sedimentary conditions of oil shale. The stability, occlusion and brackish water reduction in the central tectonic platform are determined. Rock formation, favorable conditions for development. The oil shale strata are mainly distributed in three areas, namely, the Anfurtun-Jingbibei buried hill, the Dongshengbao-Jing’anbo buried hill and the Biantai-Caotai buried hill belt. The oil shale formation is subdivided into three layers from top to bottom Group, the upper and lower oil shale development segment, the middle of the mudstone sandstone and carbonate sandstone, with a typical “sandwich ” structural characteristics, and due to seasonal climate change with the relatively dry evaporation environment, the formation of Oil shale, carbonate rock and argillaceous rock and other kinds of rock intergrowth and intergranular fractures and other reservoir space, so that the source rock has a certain reservoir characteristics.