The images produced by conventional vertical seismic profile imaging methods often suffer from the problems of illumination limitation and uncompleted wavefield separation. In this paper, we give a deep insight into the illumination behaviours of the upgoing primary and downgoing multiple signals and illustrate their merits and demerits in illuminating the subsurface structure around the well trajectory. Based on this, we develop an efficient joint imaging method of acoustic vertical seismic profile data based on the generalized Radon transform migration inversion theory. By analysing the interference characteristics of the primary and multiple reflections, we verify the capability of this method that can handle the joint imaging directly. The proposed method combines the advantages of primary and multiple contributions to the subsurface image without additional wavefield separation. The numerical results of synthetic data and field data demonstrate high‐quality construction of the structure in the vicinity of the borehole, also away from the well trajectory.

中文翻译：

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广义don变换偏移的垂直地震剖面资料联合成像方法。

由常规垂直地震剖面成像方法产生的图像经常遭受照明限制和波场分离不完全的问题。在本文中，我们对上行的主信号和下行的多个信号的照明行为进行了深入的了解，并说明了它们在照亮井眼轨迹周围的地下结构方面的优缺点。在此基础上，我们基于广义Radon变换偏移反演理论，开发了一种有效的声垂直地震剖面数据联合成像方法。通过分析一次和多次反射的干涉特性，我们验证了该方法可以直接处理联合成像的能力。所提出的方法结合了对地下图像的主要贡献和多重贡献的优点，而无需额外的波场分离。综合数据和现场数据的数值结果表明，在井眼附近，也远离井眼轨迹，该结构是高质量的构造。