GPU叠前时间偏移处理在麦捷煤矿的应用

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GETOFFSETGROUPPARAM、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．

Application of GPU Prestack Time Migration Processsing in Maijie Coalmine

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 .