扒楼沟剖面二叠系辫状河砂体构型与非均质性特征

发布时间：2018-03-19 00:28

本文选题：扒楼沟剖面　切入点：辫状河　出处：《中国石油大学学报(自然科学版)》2016年06期 　论文类型：期刊论文

【摘要】：通过露头实测、精细解剖与岩相分析等方法,结合岩石薄片与物性资料,对山西保德扒楼沟剖面二叠系山西组辫状河砂体的构型与非均质性特征进行系统研究。结果表明:辫状河主要发育河道和心滩2种成因砂体,河道砂体的垂向岩相组合为Ge-St,心滩砂体的垂向岩相组合为Ge-Sm-M-Sm-Sp-M-Sp或Ge-Sm-St-Sm-St-Sp-M-Sp;辫状河砂体可划分为5级构型单元,由小到大分别是层系、层系组、心滩/河道增生单元、心滩/辫状河道、单期河道,河道砂体由多个增生单元在垂向上加积构成,心滩砂体由多个增生单元与串沟砂体在垂向上加积构成,内部发育泥质夹层;心滩砂体物性优于河道砂体,非均质性相对较弱,整体可以作为优质储层,而河道砂体仅在靠近河心的部位物性较好,可作为优质储层;心滩砂体内规模较大的泥质夹层附近和河道砂体的边部及中上部可聚集剩余油,且心滩砂体内剩余油储量相对河道砂体较大。
[Abstract]:By means of outcrop measurement, fine anatomy and lithofacies analysis, combined with thin rock slices and physical properties, The configuration and heterogeneity characteristics of braided river sand bodies in Shanxi formation of Permian in Baodi Chaolougou section, Shanxi Province, are systematically studied. The results show that the braided rivers mainly develop two kinds of genetic sandbodies, channel and Xintan. The vertical lithofacies assemblage of channel sand body is Ge-Stand, the vertical lithofacies assemblage of Xintan sand body is Ge-Sm-M-Sm-Sp-M-Sp or Ge-Sm-Stm-St-St-St-Sp-M-Sp-M, the sand body of river channel can be divided into 5 grade configuration units, from small to large, they are stratigraphic system, stratiform group, core beach / channel accretion unit, core beach / channel accretion unit, core beach / braided channel. In a single-stage channel, the channel sand body is composed of a number of accretive units accumulated vertically, the core beach sand body is composed of multiple accretive units and a string channel sand body, and the inner muddy intercalation is developed, and the physical properties of the core beach sand body are superior to that of the channel sand body. The heterogeneity is relatively weak, the whole can be regarded as the high quality reservoir, while the channel sand body is only better in the position near the center of the river, so it can be used as the high quality reservoir. The remaining oil can be accumulated near the larger muddy intercalation and the edge and upper part of the channel sand body in Xintan sand body, and the remaining oil reserves in the sand body are larger than that in the channel sand body.
【作者单位】：中国石油大学地球科学与技术学院;中国石化胜利油田分公司;新疆油田公司实验检测研究院;
【基金】：“十二五”国家油气重大专项(2011ZX05013-002)
【分类号】：P618.13

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