地下储层建筑结构预测模型的建立

在露头研究、岩心分析的基础上 ,在双河油田建立了不同于 Miall划分方案的 6级界面系列 ,总结了 7种基本结构要素 (水下分流道、河口坝、水下溢岸、前缘席状砂、重力流、水下决口扇、湖相泥 )的特征及测井响应 .通过储层精细对比 ,建立了双河油田核三段 I- IV油组的储层建筑结构预测模型 ,总结了建立地下储层建筑结构模型的方法和基本步骤 .模型表明扇三角洲平面模型具有分带性 ,剖面模型则可分为分流河道型、分流河道与河口坝型、席状砂型、递变型 .建筑结构模型可用于建立储层精细流动单元模型或结合开发动态 ,据此可直接进行剩余油分布分析

Establishment of the Prediction Models of Reservoir Architectural Elements

Based on the study of outcrop and the analysis of cores, a six rank interface system is established for Shuanghe oilfield. The division of the six rank interface system is different from that of Miall scheme. The characteristics and log responses of seven structural elements are summarized. The prediction models of the reservoir architectural elements of Shuanghe oilfield are established. The steps of establishing the models are drawn. The models show that, on plane, from lake bank to lake center, the distribution of the structural elements is in turn: distributary channel, debouch bar, sheet sand and lake facies mud; profile prediction models include four types: distributary channel model, distributary channel and debouch bar model, sheet sand model, and gradation model. The models can be used for establishing flow unit models for fine reservoir simulation, or for analyzing residual oil distribution.