二次层析静校正在黄土高原区应用

The Application of Tomographic Inversion Static Correction in Complex Survey

陕西某油气勘探区地表剧烈起伏、纵横向速度变化大。所采集到的单炮初至不清楚,拾取非常困难。一般的折射静校正方法很难完全解决该地区的静校正问题。本文运用二次层析静校正的方法,逐步提高拾取精度,两次层析静校正计算可逐步消除该地区的长、中、短波长问题,最终得到较好的叠加剖面。

As the surface salient relief,and velocity change greatly in vertical and horizontal direction in a oil survey of ShanXi.It is very difficult to pick the first break because it is not clear on shot gathers. The normal static correction methods can t resolve the static correction problems completely.In the paper, the twice tomographic inversion static correction are applied and picking accuracy is improved step-by- step.All static correction problems are removed gradually by using tomographic inversion resul...