基于卫星影像建立曲流河地质知识库及应用

曲流河储层在国内各大油田中占有较大比例，建立曲流河地质知识库，对储层进行精细研究十分重要。采用GoogleEarth软件观测曲流河特征，建立6种发育模式；测量曲流河河道参数数据，分析统计参数间的相关关系。通过观测，将曲流河发育模式划分为单一河道低弯曲度小边滩发育型、单一河道高弯曲度大边滩发育型、简单河道低弯曲度小边滩发育型、 简单河道高弯曲度大边滩发育型、多河道低弯曲度小边滩发育型、多河道高弯曲度大边滩发育型6种类型。对曲流河参数数据进行统计分析，发现曲流河河道宽度与点坝长度、河道宽度与单一曲流带宽度 、点坝长度与点坝宽度间均具有较好的正相关关系。按曲率为1.1~1.5、1.5~2.5、2.5~4.5统计分析，参数间的正相关性高于所有数据参数分析结果。为此，建立了曲流河的定性模式和不同曲率下 曲流河的定量模式。研究结果可为地下曲流河储层研究提供相应模式和定量化指导。

Application of Geological Knowledge Database of Modern Meandering River Based on Satellite Image

Reservoir of the meandering river has a large proportion in oilfields of China, so it is important to establish geological knowledge database for a further study on fluvial reservoir. Observing characteristics of meandering river by GoogleEarth software, we establish six kinds of meandering river development mode, measure channel parameter data and analysis the statistical correlation between the parameters. There are six kinds of meandering river development mode: low bending small point bar development type of single channel, high bending large point bar development type of single channel, low bending small point bar development type of simple channel, high bending large point bar development type of simple channel, low bending small point bar development type of multiple channel, high bending large point bar development type of multiple channel. Statistical analysis of the measured data shows that there are good correlations between channel width and point bar length, channel width and meander belt width, point bar width and point bar length of meandering rivers. The correlation coefficients of meandering rivers are higher than that in the condition of different curvatures divided into 1.1-1.5、1.5-2.5、2.5-4.5. Therefore, a meandering river qualitative model was built, and quantitative model of meandering river under different curvature were also established. The results of the study can provide a corresponding model and quantitative guidance for underground meandering river reservoir research.