OVT域五维规则化在煤田高密度数据处理中的应用  

Application of Five-dimensional Regularization in OVT Domain in High-density Data Processing of Coal Fields

作　　者：蔡文芮 CAI Wen-rui(Xi′an Research Institute Co.,Ltd.,China Coal Technology and Engineering Group,Xi′an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,西安710077

出　　处：《煤炭技术》2021年第12期86-90,共5页Coal Technology

基　　金：中煤科工集团西安研究院有限公司科技创新基金项目(2019XAYMS28)。

摘　　要：将OVT域五维规则化技术引入煤田高密度地震数据处理中,通过OVT面元划分,利用数据在OVT域中的特点,将数据沿炮线、检波线、时间、方位角和炮检距5个维度的傅里叶谱,作为地震道重构的约束条件,以消除覆盖次数、炮检距的突变对构造成像的影响。研究表明,该方法能够使提高极低照明度区域的覆盖次数,改善浅层数据缺失现象,减小覆盖次数和炮检距突变带来的假象,提高成像质量。使处理剖面真实自然,断点清晰,无假频现象。实际资料证实了该方法的有效性。The five-dimensional regularization technology in OVT domain is introduced into the highdensity seismic data processing of coal field.Through the division of OVT bin and the characteristics of data in OVT domain,the Fourier spectrum of data along the five dimensions of shot line,detector line,time,azimuth and offset is taken as the constraint condition of seismic trace reconstruction,so as to eliminate the influence of abrupt change of coverage times and offset on structural imaging.The results show that this method can improve the coverage times of very low illumination area,improve the phenomenon of shallow data missing,reduce the false image caused by coverage times and offset mutation,and improve the imaging quality.The profile is real and natural,the fault is clear,and there is no aliasing phenomenon.Practical data confirmed the effectiveness of the method.

关 键 词：高密度地震勘探 炮检距向量片 五维规则化 

分 类 号：P631.4[天文地球—地质矿产勘探]