歧口凹陷板桥斜坡滨Ⅰ油组有利储集相带分析

发布时间：2018-04-12 15:45

本文选题：歧口凹陷 + 板桥斜坡　；参考：《特种油气藏》2017年01期

【摘要】：通过测录井、岩心、粒度分析等资料,综合研究了歧口凹陷板桥斜坡滨Ⅰ油组主要沉积相类型、富集高产相带及其展布规律。研究表明,歧口凹陷板桥斜坡滨Ⅰ油组以发育扇三角洲前缘为主,局部见远岸水下扇重力流沉积,可识别出水下分支河道(包括主水下分支河道、水下分支河道2种二级微相)、河口坝、席状砂、前缘远端滑塌浊积体等沉积微相。统计分析表明,不同沉积微相储集物性差异明显,对含油气性及油气产量具有明显的控制作用,其中,主水下分支河道砂岩单层厚度大、粒度粗、分选好、泥质含量低,储集物性好,含油气性好,油气产量高,是最有利的储集相带;水下分支河道、河口坝次之,席状砂、浊积体相对较差。该研究为油气勘探部署及井位优选提供了依据。
[Abstract]:Based on logging, core and particle size analysis, the main sedimentary facies types, enrichment and high yield facies belts and their distribution in Banqiao slope of Qikou depression are studied.The results show that the BinI formation of Banqiao slope in Qikou sag is dominated by the development of fan delta front, and the gravity flow deposition of underwater fan on the far shore can be seen locally, which can identify the underwater branch channel (including the main underwater branch channel).There are two kinds of secondary microfacies, such as estuarine dam, table-shaped sand, and the distal sloughing turbidite in the subaqueous branch channel.The statistical analysis shows that the reservoir properties of different sedimentary microfacies are obviously different, which can control the oil and gas bearing property and oil and gas production obviously. Among them, the sandstone of the main underwater branch channel has large monolayer thickness, coarse grain size, good sorting and low muddy content.It is the most favorable reservoir facies belt with good reservoir physical property, good oil and gas bearing property and high oil and gas production, while the subaqueous branch channel, estuarine dam is the second, sheet sand and turbidite are relatively poor.The research provides a basis for oil and gas exploration and well location selection.
【作者单位】：中国石油大港油田分公司;
【基金】：国家科技重大专项“渤海湾盆地北部油气富集规律与增储领域研究”(2011ZX06005)
【分类号】：P618.13

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