砂体内部建筑结构和流动单元模型对比研究——以胜坨油田为例  

Comparison of architecture and flow units in sand body——case study of Shengtuo Oilfield

作　　者：汪必峰[1] 黄文科[2] 戴俊生[1] 窦之林[3] 冀国胜[1] 

机构地区：[1]中国石油大学(华东)地球资源与信息学院,山东东营257061 [2]中国石油长庆油田公司采气一厂,陕西靖边710058 [3]中国石化集团西北石油局,新疆乌鲁木齐830000

出　　处：《油气地质与采收率》2007年第6期5-8,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家"十五"科技攻关项目"大中型油田勘探开发关键技术研究"(2003BA613A-02)

摘　　要：以胜坨油田二区沙二段34小层辫状河沉积砂体为例,建立其流动单元和建筑结构模型。通过2种模型对比研究可知,建筑结构和流动单元具有很好的对应关系,两者均是按照沉积体内部水动力条件变化所划分出来的储集体,具有相似储集条件的流动单元和建筑结构单元具有相同的平面和空间分布范围。将流动单元和建筑结构模型分别与剩余油饱和度模型进行叠合分析可知,储集物性较差的流动单元和建筑结构单元的大部分区域有剩余油分布,储集性能较好的流动单元和建筑结构单元的边缘部位及不同类型流动单元和建筑结构单元的交界部位也有剩余油分布。Flow units and architecture models of the sedimentary sand bodies of braided river were established in Es2 34 of Shengtuo Oilfield. The comparison of these two models indicates that the good corresponding relationship exists between the architecture and flow units, both of which are the reservoirs divided by the change of hydrodynamic condition in the sedimentary body and have a fine correspondent relationship. With similar reservoir condition, the flow unit and architectural elements have same distribution in plane and space. The synthetically analysis on flow units, architecture models and remaining oil saturation showed that the remaining oil distributes mainly in the flow units or architectural elements with poor physical property, then the boundary of the flow units or architectural elements with goodphysical property, and the boundary of different flow units or architectural elements.

关 键 词：辫状河 建筑结构分析法 结构单元 流动单元 剩余油 

分 类 号：TE111.3[石油与天然气工程—油气勘探]