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3D多分量处理和采集方法的进展增加了有关储层的信息量。现有处理技术能够用OBC资料成像P-S转换波(Converted Wave简称C波)的时间或深度剖面。这些成像结果能增强对储层的描述,在浅层气云干扰压缩波传播的情况下更是如此。 本文用三个实际资料例子来介绍转换波处理技术。第一个实例展示北海盐丘的转换波叠前深度偏移技术,数据是用拖曳阵列系统(图la)采集的。第二个实例证明北海Valhall油田转换波3D叠前时间偏移的能力,数据用拖挂电缆系统(图lb)采集。第三个实例介绍了重要的处理环节之一——海底多分量检波器定向,所用资料为用悬挂电缆系统(图lc)在墨西哥湾Matagorda岛采集的3D转换波数据集。
Advances in 3D multi-component processing and acquisition methods have increased the amount of information on the reservoir. Existing processing techniques can use the OBC data to image time or depth profiles of P-S converted waves (C-waves). These imaging results can enhance the description of the reservoir, especially in the case of superficial gas cloud interference compressional wave propagation. In this paper, three examples of practical data to introduce the conversion wave processing technology. The first example shows the converted wave prestack depth migration technique for the North Sea salt dome, collected using a towed array system (Figure 1a). The second example demonstrates the ability of the North Sea Valhall field to transform the 3D prestack time migration data using a towed cable system (Figure 1b). The third example introduces one of the key processing steps, the seabed multi-component geophone orientation, using the 3D converted wave data collected on the Matagorda Island of the Gulf of Mexico using a suspension cable system (Figure lc).