GPU并行加速的多步逆时偏移在东濮前梨园地区的应用

为了解决东濮油田复杂断块成像难题,笔者采用了多步逆时偏移成像方法,并使用了GPU进行并行加速。经过GPU并行加速的多步逆时偏移成像方法解决了RTM计算效率低的应用限制问题,并成功应用于复杂断层成像处理中。通过对前梨园三维地震资料的偏移成像处理,验证了逆时偏移成像技术在处理东濮地下复杂小断块和兰聊大断层上具有成像优越性;偏移效率分析试验证明了基于GPU并行加速的逆时偏移成像方法,能有效地提高计算效率75倍。

The application of GPU accelerated multi-step reverse time migration to the Dongpu oilfield

In order to solve complicated faults imaging problem of the Dongpu oilfield,the authors utilized multi?step reverse time mi?gration method and realized GPU accelerate parallel algorithm for overcoming the low compute efficiency disadvantage of RTM.The GPU accelerated multi?step reverse time migration method was successfully applied to complicated faults imaging processing. The RTM ima?ging result of Qianliyuan 3D data proved the technological advantage of RTM for complicated small faults imaging and Lanliao dip?angle faults imaging.Migration efficiency analyses demonstrate that RTM based on GPU accelerate algorithm can effectively improve the com?putational efficiency by 75 times.