GPU叠前时间偏移处理在麦捷煤矿的应用
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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 multiprocessor advantage and advanced seismic processing algorithms in one.GPU prestack 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.
引文
[1]冯世民,冯鑫,李雅玲.地震资料叠前时间偏移在徐庄煤矿西部采区的应用[J].中国煤炭地质,2009,21,01.

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