【摘要】 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。更多还原

【Abstract】 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 results in this area,and a good quality stack section is obtained.更多还原