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    • 55. 发明授权
    • Device and method for extrapolating specular energy of reverse time migration three dimensional angle gathers
    • 用于推测反向时间偏移三维角度聚集的镜面能量的装置和方法
    • US09250341B2
    • 2016-02-02
    • US13454547
    • 2012-04-24
    • Bing TangSheng XuYu Zhang
    • Bing TangSheng XuYu Zhang
    • G01V1/28G01V1/36
    • G01V1/36G01V2210/51G01V2210/52G01V2210/679
    • Computer instructions, computing device and method for processing seismic data under-sampled in an angle domain, the seismic data corresponding to a reverse time migration, three-dimensional, angle domain common image gather (ADCIG). The method includes receiving the seismic data; calculating, based on the seismic data, shot and receiver wave-fields with an RTM wave propagation engine; applying a wave-fields decomposition algorithm to obtain a propagation direction for the shot and receiver wave-fields; forming the ADCIG by applying an image condition to the shot and receiver wave-fields; determining that specular energies of the ADCIG are under-sampled around a reflection angle; during the step of forming the ADCIG, extrapolating the specular energies to a neighborhood of the reflection angle; and generating an image of a subsurface that is being surveyed based on the extrapolated specular energies.
    • 用于处理角度域欠采样的地震数据的计算机指令,计算装置和方法,对应于反向时间偏移,三维,角域共同图像采集(ADCIG)的地震数据。 该方法包括接收地震数据; 基于地震数据,利用RTM波传播引擎计算射击和接收波场; 应用波场分解算法获得射波和接收波场的传播方向; 通过对拍摄和接收器波场应用图像条件来形成ADCIG; 确定ADCIG的镜面能量在反射角附近被低采样; 在形成ADCIG的步骤中,将镜面能量外推到反射角附近; 并且基于外推的镜面能量产生正被测量的地下图像。