黄土塬地区井控约束长波长静校正技术研究及应用  

Research and application of the long wavelength static correction technology with well control in the loess plateau area

作　　者：居兴国[1] 余青露[1] 

机构地区：[1]中国石油化工股份有限公司石油物探技术研究院,南京210014

出　　处：《地球物理学进展》2017年第3期1149-1153,共5页Progress in Geophysics

摘　　要：鄂南黄土塬区由于巨厚黄土层,经过一次静校正(层析静校正)、剩余静校正处理,仍然存在较严重的静校正问题,处理成果存在与地表高程相关的假构造,影响了地震资料的解释.因此,文中提出了一种井控约束长波长静校正技术,来解决剩余的静校正量.通过研究,分析了剩余长波长静校正问题和地表高程的相关性,根据这两者的相关性和井数据,拟合得到井控长波长静校正量函数,计算全区长波长静校正量.对该方法在黄土塬区进行应用,井控约束长波长静校正技术处理后,剖面上的假构造得到消除,较好的解决了黄土覆盖区严重的静校正问题.Because of thickness loess,the seismic data have still a serious problem of static correction after tomography static correction and residual static correction processing in loess tableland, the processing results have the false structure related to the surface elevation, which will affect the seismic data interpretation.Therefore, this paper puts forward a long wavelength static correction technology with well control to solve the residual statics.Firstly,this paper analyses the correlation of the residual long wavelength static correction problem with surface elevation,then according to the corresponding relationship between the surface elevation and residual long wavelength static correction and well data,the well control long wavelength static correction function is fitted and applied to calculate the long wavelength statics in the whole work area. The application of the method in the loess tableland shows the method can eliminate fake structure of the processing profile and solve the severe static correction in loess overburden area well.

关 键 词：黄土塬 静校正 井控长波长静校正 地表高程 关键控制井 

分 类 号：P631[天文地球—地质矿产勘探]