地震速度体建模是海洋深水区地层深度预测的有效方法,而基于井控层控的速度体建模方法能够进一步提高地层深度预测的精度.本文对该技术的关键要素进行了深入研究,分析了速度体优选、中值滤波处理对地层深度预测精度的影响规律.结果表明:通过地震速度体的优化,选取合适的滤波窗口及滤波次数,目的层的地层预测深度相对误差能控制在0.3%左右. The modeling of seismic velocity body is an effective method for the prediction of formation depth in deepwater marine areas, and the velocity body modeling method based on well-controlled layer control can further improve the accuracy of formation depth prediction. In this paper, the key elements of this technique are deeply studied and analyzed The results show that the relative error of the prediction depth of target formation can be controlled within 0.3% by selecting proper filter window and filtering times through the optimization of seismic velocity body, about.