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二维地震叠偏剖面作图方法的疑难问题
A problem arisen from mapping with 2-D seismic migration
【摘要】 利用单斜构造摸型对T0 空校作图方法的正偏移和反偏移进行计算 ,结果表明“三维空间偏移量可以分解为测线x方向上和垂直于x方向的 2个分量 ,它们恰好是沿着这 2个方向上的二维偏移量”的结论对v(z) =v0 (1+βz)时的连续介质而言是不成立的 ,从而使有关的叠偏剖面作图方法在原理上出现了疑难问题。
【Abstract】 The calculation of migration and demigration of T 0 spatial correction mapping is carried on a monoclinal structure model in the paper. When the medium is of v(z)= v 0(1+βz) , the computational results disagree with argument that 3 D migration offset can be split into two components pointing respectively in x direction and vertical direction, and they are just the 2 D migration offset in these two directions, therefore producing an difficult problem for mapping with 2 D migration section.
【关键词】 单斜构造模型;
偏移;
反偏移;
连续介质;
疑难问题;
【Key words】 monoclinal structure model; migration; demigration; continuous medium; difficult problem;
【Key words】 monoclinal structure model; migration; demigration; continuous medium; difficult problem;
- 【文献出处】 石油物探 ,Geophysical Prospecting For Petrole , 编辑部邮箱 ,2002年02期
- 【分类号】P631.4
- 【被引频次】4
- 【下载频次】49