Vertical Seismic Profiling Depth Migration of a Salt Dome Flank — A Summary
Vertical Seismic Profiling Depth Migration of a Salt Dome Flank — A Summary
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DOI：
10.1007/978-1-4684-5320-1_56
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
N. D. Whitmore;L. Lines
中科院分区：
文献类型：
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作者：
N. D. Whitmore;L. Lines
垂直地震剖面(VSP)提供了速度和地下界面位置的信息。设计合理的VSP可用于绘制陡峭的界面，如盐丘侧翼。用VSP数据绘制地下界面需要仔细的测量设计、适当的数据处理、层速度估计和反射层映射。这四个要素中的第一个要素在大多数情况下是通过收购前建模来满足的。第二个是通过仔细的数据处理来完成的。初始速度估计由地震层析成像提供。速度模型的精化是通过迭代建模和迭代最小二乘反演相结合的方法来完成的。最后，将得到的层速度用于处理后的VSP的深度偏移。这四种成分被结合在一起绘制了盐丘侧翼的地图。
Vertical Seismic Profiles (VSPs) supply information about both velocity and subsurface interface locations. Properly designed VSPs can be used to map steeply dipping interfaces such as salt dome flanks. Mapping subsurface interfaces with VSP data requires careful survey design, appropriate data processing, interval velocity estimation, and reflector mapping. The first of these four ingredients is satisfied in most cases by preacquisition modeling. The second is accomplished by careful data processing. The initial velocity estimates are provided by seismic tomography. Velocity model refinement is accomplished by a combination of iterative modeling and iterative least squares inversion. Finally, the resultant interval velocities are used in depth migration of the processed VSP. These four ingredients have been combined to map a salt dome flank.