扇三角洲前缘单一河道砂体识别与定量表征

发布时间：2018-02-28 12:37

本文关键词： 单一河道砂体边界识别标志垂向叠置样式定量表征兴Ⅰ组　出处：《大庆石油地质与开发》2017年01期 　论文类型：期刊论文

【摘要】：为定量刻画具有复杂叠置关系的扇三角洲储层单一河道砂体的时空分布特点,利用密井网区10口取心井岩心资料和588口井测井资料,以沉积学理论为指导,对辽河油田曙一区Du84块兴Ⅰ组扇三角洲前缘水下分流河道内单一河道砂体进行定量识别。结果表明:单一河道砂体边界识别标志包括高程差异、坝上孤立河道、厚薄厚特征、砂体侧向叠置和河道间沉积等5种类型;垂向叠置样式包括垂向叠置、错位叠置和孤立型叠置等3种类型;扇三角洲前缘水下分流河道呈NE-WS方向展布,从近源到远源位置河道分叉程度变高,宽度变窄,弯曲度增加,单砂体由垂向叠置型的连片分布变为孤立型的条带状分布。
[Abstract]:In order to describe quantitatively the spatial and temporal distribution of single channel sand bodies in fan delta reservoirs with complex superposition, the core data of 10 coring wells and 588 well logging data in dense well pattern area are used, and the sedimentological theory is used as a guide. Quantitative identification of single channel sand bodies in fan delta front distributary channel of Du84 block I in Shu-1 area of Liaohe Oilfield is carried out. The results show that the boundary recognition marks of single channel sand body include elevation difference, isolated channel in Bashang, thick, thin and thick characteristics. There are five types of lateral overlay and interchannel deposition in sand body, three types of vertical overlay, three types of vertical overlay, staggered overlay and isolated overlay, and the subaqueous distributary channel in front of fan delta distributes in the direction of NE-WS, and the subaqueous distributary channel in the front of fan delta is distributed in the direction of NE-WS. From the near source to the far source, the channel bifurcation degree becomes higher, the width becomes narrower, the curvature increases, and the single sand body changes from the vertical superposition pattern to the isolated strip distribution.
【作者单位】：中国石油勘探开发研究院;中国地质大学;
【基金】：国家科技重大专项项目“大型油气田及煤层气开发”(2011ZX05032) 国家自然科学基金项目“潮控河口湾油砂储层构型及盖层完整性评价研究”(41472119)
【分类号】：P618.13

【相似文献】