Author(s): DI Bangrang1, PEI Zhenglin1, 2, XIA Jizhuang3, WANG Hui3andbilifei3.1.cnpckeylabofgeophysicalexploration, CHINA Universityofpetroleumbeijingcity, 10083, CHINA2.BEIJING Northlintaipetroleumtechnologyco., ltd, BEIJING City, 100192, CHINA3.GRI Ofshenglioilfieldco., ltd, DONGYING City, SHANDONG Province, 257022, china
Pages: 622-629,527,650
Year: 2009 Issue:  5
Journal: Oil Geophysical Prospecting
Keyword:  薄互层;  黏弹性;  质心频率;  小波瞬时衰减;  Q值;  非均匀介质;
Abstract: 本文采用质心频率法和小波瞬时衰减系数法反演计算了薄互层油气储层的Q值,建立了薄互层油气储集体黏弹性介质模型。采用非均匀介质中黏弹性波方程交错网格高阶有限差分法进行了黏弹性波和弹性波正演模拟。数值模拟试验表明,黏弹性波模拟的油气水AVO响应与弹性波模拟的油气水AVO响应存在明显差异。黏弹性波方程数值模拟能够更加真实模拟实际地震波场。纵波和转换波偏移剖面与正演模型吻合很好。