摘要
针对准中4区块头屯河组河道砂体发育广泛、相互交错、纵向多期叠置等特点,应用一系列地球物理方法描述河道砂体。通过地震正演和合成记录标定,明确河道砂体的地震反射特征,利用相干体沿层切片划分河道砂体发育期次,分频属性的RGB融合,精细刻画河道形态并利用三维可视化及自动追踪技术实现河道砂体的描述。这些方法的综合应用可以快速、全面地识别并描述河道砂体,从两口井钻遇的六套砂体情况看,符合率达到100%。
Aimming at the characteristics of wildly developed, intertwined and vertically multiphase superimposed of channel sand in Jurassic Toutunhe formation in the block 4 of central Junggar basin, a series of geophysical methods were used to describe the channel sand. Thereafter, seismic reflection feature was determined by seismic forward synthetic seismogram calibration. Channel sand develop stage was divided by lateral slice of coherent volume. Fine characterization of channel sand morphology by frequency division RGB fusion was realized by 3D visualization and automatic tracing techniques. It is concluded that the integrated applica-tion of these techniques can distinguish and describe channel sand rapidly and comprehensively. From the situation of six sand body of two drilled wells, the coincidence rate was 100 %.
出处
《油气藏评价与开发》
2014年第5期6-10,共5页
Petroleum Reservoir Evaluation and Development
关键词
准中4区块
地震正演
沿层相干切片
RGB融合
河道砂
block 4 of central Junggar basin
seismic forward modeling
lateral slice of coherent volume
RGB fusion
channel sand
