论文部分内容阅读
王家序:横向覆盖次数低的三维静校正方法,《石油地球物理勘探》,22(2)1987:225～227,231在三维处理流程中,三维剩余静校正是一项重要的内容。经过三维剩余静校正后的剖面要比静校正之前有较大的改善。但三维剩余静校正要求纵方向(沿接收线方向)和横向(垂直接收线方向)上都有一定的覆盖次数。而有些地区,由于地表条件或其他原因,横向上只有一次覆盖。这样,在三维剩余静校正后仍然出现一些不正常现象,例如同相轴有明显的扭动(在图2a 中1.5和2.0s 处可见到这种现象);信噪比改善不大。
WANG Jia-Xu: Three-dimensional Static Correction Method with Low Horizontal Coverage, “Petroleum Geophysical Prospecting”, 22 (2) 1987: 225 ~ 227,231 Three-dimensional residual statics is an important content in three-dimensional processing. After three-dimensional residual static correction of the profile than before static correction has been greatly improved. However, the three-dimensional residual statics require that there be a certain number of overlaps in the longitudinal direction (in the receiving line direction) and in the transverse direction (in the vertical receiving line direction). In some areas, there is only one horizontal coverage due to surface conditions or other reasons. In this way, some abnormal phenomena still appear after the three-dimensional residual static correction, such as obvious twisting of the phase axis (this phenomenon can be seen at 1.5 and 2.0 s in Figure 2a); and the signal-to-noise ratio is not improved much.