基于井震结合的方法对英台油田叠置砂体的预测研究

对于陆相盆地中小于1/4地震波长的薄砂体,地震剖面上难于直接预测。因此,利用地震水平分辨率来提高垂向分辨率的思路,通过精细的井震结合和层位标定,依据参考标准层为基准面,利用多种地震属性,对英台油田目的层段进行等时属性切片,在结合钻测井资料和开发动态资料的基础上对砂体进行沉积演化解释,揭示砂体在空间上随时间的变化规律,进而确定砂体的分布和演化规律,为下步油田开发调整提供重要的地质依据。

Prediction of Overlapped Sandbodies in Yingtai Oilfield Based on the Integrated Well Logging and Seismic Data

The thin sand interbedded reservoirs with the thickness less than 1/4 wavelength were hard to be identified from seismic profile directly in continental basins.Based on the idea of using horizontal seismic resolution to improve the vertical resolution,through fine integration of well-logging with seismic data and horizon calibration,the standard reference layer was used as key horizon,seismic attributes were used for making an isochroous slice of the horizon in Yingtai Oilfield.In combination with drilling and dynamic production data,the sedimentary evolution of sand is interpreted to present the changing rules of sandbody with time changes in space,thus the distribution and evolution rules of sand are determined,it provides an important geologic base for following adjustment of oilfield development.