“三端员定型”法识别滨岸相砂岩储层隔夹层:以塔里木盆地哈得逊油田东河砂岩为例

发布时间：2018-05-14 22:20

本文选题：滨岸相 + 隔夹层　；参考：《地学前缘》2017年05期

【摘要】：滨岸相砂岩储层发育薄层隔夹层,由于测井垂向分辨率和薄层效应的影响,用于识别不同类型隔夹层的关键测井参数的数值范围部分重合,使常用测井识别方法面临困难。针对这一问题,本研究在多口井岩心观察描述的基础上,基于常规测井资料、岩心实验分析资料,创新性采用"三端员定型"法识别三类隔夹层:钙质隔夹层、泥灰质隔夹层和泥质隔夹层。不同类型隔夹层在图版上不仅能有效区分,同时还能反映出钙质含量、泥质含量变化对隔夹层物性的影响。依据隔夹层识别结果,将研究区隔夹层垂向上分为4种接触关系:单一型、渐变型、突变型和多峰型;平面上分为4种分布模式:片状大面积分布型、突变接触型、渐变接触型和随机分布型,明确了隔夹层的发育特征。研究认为,垂直渗透率与钙质含量具有正相关性,与泥质含量相关性差;应用产量控制系数C(与隔夹层厚度和垂直渗透率相关)论证了具有一定厚度的隔夹层对产量的控制能力按泥质隔夹层、泥灰质隔夹层、钙质隔夹层顺序依次增强,因此钙质隔夹层在研究区对油水垂向运动的影响最大。研究成果对滨岸相砂岩储层油田开发后期剩余油挖潜及制订开发调整方案具有重要意义。
[Abstract]:Due to the influence of vertical resolution and thin-layer effect of logging, the numerical range of key logging parameters used to identify different types of interlayers is partially coincident, which makes it difficult to identify common logging methods. In order to solve this problem, based on the observation and description of cores in many wells, and on the basis of conventional logging data and core experimental analysis data, this study innovatively adopts "three end member determination" method to identify three types of interlayers: calcareous intercalation. Muddy intercalation and muddy interlayer. Different types of interlayer not only can be effectively distinguished, but also can reflect the influence of the content of calcium and mud on the physical properties of the interlayer. According to the identification results of the interlayer, the vertical contact relationship of the interlayer in the study area is divided into four types: single type, gradual change type, mutation type and multi-peak type, and the plane is divided into four distribution modes: the large area distribution pattern, the abrupt contact type. Gradual contact type and random distribution type, the development characteristics of the intercalation are defined. The results show that vertical permeability has positive correlation with calcium content, but poor correlation with muddy content. With the application of yield control coefficient C (related to the thickness of interlayer and vertical permeability), it is proved that the control ability of interlayer with a certain thickness to production is enhanced in order of mud intercalation, marl intercalation and calcareous intercalation. Therefore, calcareous intercalation has the greatest influence on the vertical movement of oil and water in the study area. The research results are of great significance for tapping the remaining oil potential and formulating the development adjustment scheme in the later stage of development of shoreline sandstone reservoir oil field.
【作者单位】：中国地质大学(北京)能源学院;中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室;中国石油塔里木油田分公司;
【基金】：国家自然科学基金项目(41372139,41072098) 国家科技重大专项专题(2016ZX05046-003-001,2011ZX05018-001-002,2011ZX05033-004)
【分类号】：P618.13;P631.81

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