曲流河道带宽深的定量计算,可用于确定地下河道带砂体的沉积规模.在吸取前人研究成果的基础上,提出了新的综合宽深公式拟合法.确定出河道满岸深度并用适合河道类型的多经验公式计算出河道带宽度值,利用连井剖面上获取的实际河宽数据进行对比,优选出能够准确反映研究区河道宽度特征的经验公式,将公式计算数据与剖面实际数据重新进行拟合,得到新的综合宽深计算公式.该方法使经验公式与研究区河道沉积特征相结合,适用于井网较稀区域河道砂体展布范围的定量预测.%The quantitative calculation of meandering river channels width/depth can accurately determine the size of the ancient meandering river. Through analyzing and summing up the studied results, the new width/depth integrated formulas matching method is presented. The banker depth of the river channel can be calculated and its width value can also be computed by multi-empirical formula that is suitable to the types of the river channel. With the help of comparing among the actual width values obtained in well-to-well cross sections, the empirical formula that can accurately response the characteristics of the channel width in the studied area is optimized and then the calculated data by the above formula is matched once more with the actual data of the section, finally the new integrated width/depth calculating formula is obtained. In a word, the method has combined the empirical formula and the sedimentary characteristics of the river channel in the studied area and furthermore it is adaptable for the qualitative prediction of the channel sandbody spread and distribution in the block with thin well pattern.
展开▼
