摘要
利用反演技术将地震数据分解为稀疏的局部平面波,彼此间互不干扰,且受到有效压制的随机噪声不参与偏移。据此使用束聚焦偏移技术可面向特定地质构造实现聚焦成像,适用于解决山前带低信噪比资料成像的技术难题。文中探讨了基于反演的束聚焦偏移技术的算法原理和实现思路,阐述了其特点和优势。H区实际资料的试算结果表明该技术具有良好的处理效果,可望得到推广应用。
Using inversion technique, we decompose seismic data into independent local plane waves.Noise is attenuated and will not be involved into migration.The beam-focusing migration technique is then developed with the decomposed data and is used to image low SNR data in piedmont zone.The principles of the bean-focusing migration based on the sparse inverse are discussed.Experimental results on field data in the Block H indicate that the proposed method deserves application.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2016年第5期924-929,836,共6页
Oil Geophysical Prospecting
关键词
稀疏分解
束聚焦
深度偏移
山前带
sparse decomposition
beam-focusing
depth migration
piedmont zone