河控三角洲河口坝储层内部隔夹层分布样式研究

发布时间：2018-01-24 10:51

本文关键词： 隔夹层分布样式河口坝构型级次胜坨油田　出处：《西南石油大学学报(自然科学版)》2017年02期 　论文类型：期刊论文

【摘要】：以胜坨油田二区沙二段8砂组为例,利用丰富的岩芯、动态监测资料及密井网条件,采用层次约束和动态拟合的研究方法,分析河口坝储层内部隔夹层的类型、成因和表征级次,讨论不同级次隔夹层的发育位置、沉积产状、规模及分布样式。研究表明,河口坝储层内部发育泥质、物性隔夹层和钙质夹层3类。5级界面处的隔夹层限定河口坝复合体,位于复合河口坝顶部,泥质、物性隔夹层侧向拼接,呈连片状,沿单层较连续分布,钙质夹层延伸规模小,呈孤立状,离散分布;4级界面处发育泥质夹层、物性夹层和钙质夹层,限定单一河口坝,位于单一河口坝相互叠置处,顺单一河口坝顶部延伸,侧向与5级界面斜交,离散分布;3级界面处的泥质夹层、物性夹层和钙质夹层,限定单一河口坝内部的增生体,数量多,厚度薄,分布离散,向湖心方向以低角度倾斜。
[Abstract]:Taking the 8 sand formation of the second member of Shahejie formation in Shengtuo Oilfield as an example, using abundant core, dynamic monitoring data and conditions of dense well pattern, using the method of hierarchical constraint and dynamic fitting, the types of intercalation inside the reservoir of estuarine dam are analyzed. The development location, sedimentary occurrence, scale and distribution pattern of intercalation in different grades are discussed. The study shows that mud is developed in the reservoir of estuarine dam. The estuarine dam complex, located at the top of the composite estuarine dam, is located at the top of the composite estuarine dam. The intercalation of physical property and the calcareous intercalation at the interface of grade 5 of class 5 is connected and flaky, and distributes continuously along the monolayer. The calcareous intercalation is small, isolated and discrete. The mud intercalation, physical intercalation and calcareous intercalation are developed at the interface of grade 4, which limits the single estuary dam, which is located at the superposition of the single estuary dam, extending along the top of the single estuary dam, oblique with the interface of grade 5, and distributed discretely. The muddy intercalation, physical intercalation and calcareous intercalation at the interface of grade 3 limit the number, thickness and dispersion of accretive bodies in a single estuary dam, and tilt to the center of the lake at a low angle.
【作者单位】：中国地质大学(北京)能源学院;中国石油大学(北京)地球科学学院;中国石油川庆钻探工程有限公司地质勘探开发研究院;
【基金】：国家科技重大专项(2011ZX05009-002;2011ZX05011-001)
【分类号】：TE33;P618.13
【正文快照】： 弓|言布样式,以期为河口坝储层开发调整及剩余油挖潜提供地质依据,同时加深对河控三角洲河口坝储层河控三角洲以河流建设作用为主,河道建设大内部隔夹层研究的认识。大超过波浪和潮汐作用的改造[1]。由于河流能量充足,携带的沉积物多,河口坝砂体最为发育,也具备1地质概况良

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