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三维(3-D)多分量地震资料处理和采集方法的发展,丰富了我们的储层信息。对海底传感器的资料,现有的处理技术能够提供P—S转换波(或称C波)的时间域或深度域剖面。这些剖面可以更好地反映储层特征,特别是在因受浅层气云影响得不到纵波传播资料的地区。为了说明C波处理技术的新进展,本文列举了三个工区的资料实例。实例一是北海盐丘C波的叠前深度偏移,资料采集用的是“拖曳式排列”系统(图1a)。实例二是北海Valhall工区的C波三维时间域成像能力,资料采集用的是“拖曳—悬挂式”海底电缆系统(图1b)。实例三用以说明资料处理中的一个关键问题:海底多分量检波器的定向。该资料是用“悬挂式”海底电缆
The development of three-dimensional (3-D) multi-component seismic data processing and acquisition methods enriches our reservoir information. For undersea sensor data, existing processing techniques can provide time-domain or depth-domain profiles of P-S converted waves (or C waves). These profiles can better reflect reservoir characteristics, especially in areas where longitudinal wave propagation is not possible due to shallow gas clouds. In order to illustrate the new progress of C wave processing technology, this article lists three work area data examples. The first example is the prestack depth migration of the C wave in the North Sea salt dome. The data acquisition uses a “trailing arrangement” system (Figure 1a). Case 2 is the C-wave 3D time-domain imaging capability of the Valhall work area in the North Sea. The data acquisition uses a “tow-hang” submarine cable system (Figure 1b). Example 3 is used to illustrate a key issue in data processing: the orientation of the seabed multi-component detector. The information is used “hanging ” submarine cable