GPU叠前时间偏移处理在麦捷煤矿的应用  

Application of GPU Prestack Time Migration Processsing in Maijie Coalmine

作　　者：李忠[1] 

机构地区：[1]中国煤炭地质总局地球物理勘探研究院,河北涿州072750

出　　处：《科技信息》2012年第29期411-412,共2页Science & Technology Information

摘　　要：在构造复杂、速度横向变化不大地区,叠前时间偏移处理已成为改善成像效果的一种有效手段。GPU/CPU协同并行地震资料处理系统,它集GPU硬件的多处理器优势及先进的地震处理算法于一体。GPU叠前时间偏移处理包含的模块有GET OFFSET GROUPPARAM、SEND、CACULATION等。在模块参数中选取偏移网格、最佳偏移孔径、拉伸算子、反假频算子、倾角等。对比GPU叠前时间偏移与叠后时间偏移效果可见,GPU叠前时间偏移比叠后时间偏移具有较高的信噪比和分辨率,成像效果明显、陷落点反映清晰,解释的陷落柱边界准确。The prestack time migration processing is ＂already an effective means to improve imaging effect in structurally complicated,velocity transversal variation not large areas. GPU/CPU based parallel seismic data processing system, it sets the GPU hardware muhiproeessor advantage and advanced seismic processing algorithms in one. GPU prestaek time migration processing the module contains a GET OFFSET GROUP PARAM, SEND, CACULATION etc. In the module parameters selected offset grid, optimal aperture, tensile operator, anti-alias operator, the dip angle. Comparison of GPU prestack time migration and poststack time migration effect of the visible, GPU prestack time migration than post-stack time migration with higher signal to noise ratio and the resolution, imaging effect obviously, collapse point reflects clearly, interpretation of subsided column boundary accurately .

关 键 词：GPU叠前时间偏移 叠后时间偏移 陷落柱 时间剖面 

分 类 号：P631.4[天文地球—地质矿产勘探]