基于反射波的剩余静校正技术在姬塬非纵资料处理中的应用

Application of the Residual Statics Technology Based on Reflected Wave in Jiyuan Broadside Seismic Processing

姬塬地区位于鄂尔多斯盆地中南部黄土塬区,地形起伏较大,低降速带厚度速度变化大,因此剩余静校正的好坏直接决定着剖面的成像精度。而非纵资料又因其缺少近偏移距信息,常规的剩余静校正方法有时会出现错位问题,本文利用CGG处理系统下新研发的基于反射波的剩余静校正模块,从原理出发,通过对实际资料的处理,分析成像效果,总结出适合于该工区的技术方法,提高成像精度。

Jiyuan region is located in the central and southern loess area of Ordos basin, the terrain undulates largely, the thickness and speed of the low-velocity area also change largely, so residual statics correction directly determine the imaging precision of the profile. Because non-ordinate data lack near-offset information, the conventional residual statics methods sometimes appear misplaced problem. In this paper, by using residual statics module based on the newly developed reflected wave in the CGG processing system, starting from the principle, through the actual data processing, imaging results were analyzed, and a suitable technical method for the work area was put forward to improve the imaging precision.