【摘要】 东岭地区地震速度场变化复杂,建立合理的速度场是发现和落实钻探目标的关键。采用三维叠加速度构建整个区域速度,利用钻井的时深数据、钻井分层、地震时间层位等条件对地震速度体进行约束标定。通过对约束条件的多次筛选,构建了东岭地区三维平均速度场模型,并将此三维速度场模型应用于时深转换,较准确地落实了东岭地区的构造。更多还原

【Abstract】 Accurate velocity field is the key to find and delineate drilling target in Dongling area due to complex velocity distribution. We constructed regional velocity volume from 3-D stack velocity and used the time-depth data from drills, zona-tions of wells, and seismic horizons as constraints to calibrate the volume. After careful selection of constraints, a 3-D average velocity model was established in Dongling survey area. The structures were accurately delineated in Dongling area by using the model for time-depth conversion.更多还原