从储层构型到“地震构型相”——一种河流相高精度概念模型的表征方法

发布时间：2018-02-12 02:34

本文关键词： 构型分类地震响应地震构型相构型相碎屑岩储层　出处：《地质学报》2017年02期 　论文类型：期刊论文

【摘要】：碎屑岩油气储层构型是指不同级次储层构成单元的形态、规模、方向及其叠置关系。由Miall(1985)运用于河流相储层表征。碎屑岩油气储层构型是储层非均质性的直观表现,直接影响到油气藏开发效果,如何进行精细构型表征是关系到能否正确量化开发指标、或者能否正确描述剩余油分布进而有效减少低效井比例的关键因素。针对渤海明化镇组河流相沉积储层厚度低于地震分辨率的先天不足,对各种构型在地震数据约束下可分辨尺度上进行分类,形成3种构型7类样式的分类体系:垂叠型、侧叠型和孤立型3种砂体构型,垂叠型、密接触侧叠型、疏散接触侧叠型、离散接触侧叠型、下切侵蚀河道孤立型、决口扇孤立型、孤立河道7类样式。研究了每类构型的地震响应特征,阐述了地震属性描述图版,概括了"地震构型相"将构型类型与地震响应有机结合,构建了基于地震构型相的高精度概念模型表征方法。鉴于目前地质建模和数模技术前提下无法对各类储层构型很好地网格化,建立"等效意义"的概念模型开启了一种很好的技术途径。
[Abstract]:The structure of clastic rock oil and gas reservoir refers to the form, scale, direction and superposition relation of different grade reservoir components. Miallan 1985) is used to characterize fluvial facies reservoir. The reservoir configuration of clastic rock is the direct manifestation of reservoir heterogeneity. It has a direct impact on the development effect of oil and gas reservoir. How to characterize the fine configuration is related to the correct quantification of the development index. Or can we describe the distribution of remaining oil correctly and effectively reduce the proportion of low-efficiency wells. In view of the inherent deficiency of fluvial facies sedimentary reservoir thickness lower than seismic resolution of Minghuazhen formation in Bohai Sea, Three types of structures are classified on discernible scales under the constraint of seismic data. They are vertical type, lateral type and isolated type, vertical type, dense contact side type, evacuation contact side type, vertical type and isolated type. In this paper, the seismic response characteristics of each type of structure are studied, and the seismic attribute description plate is described. The discrete contact side type, the down-cut erosion channel isolated type, the crevasse fan isolated type and the isolated channel type are studied. In this paper, the combination of structural type and seismic response is summarized. In this paper, a high precision conceptual model representation method based on seismic structural facies is constructed. In view of the present geological modeling and mathematical modeling technology, it is not possible to mesh all kinds of reservoir configurations well. Establishing a conceptual model of "equivalent meaning" opens up a good technical approach.
【作者单位】：中海油研究总院;
【基金】：“十二五”国家科技重大专项课题“海上开发地震关键技术及应用研究”(编号2011ZX05024-001)资助的成果
【分类号】：P618.13

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