In marine seismic oil exploration, full waveform inversion (FWI) of towed-streamer data is used to reconstruct velocity models. However, the FWI of towed-streamer data easily converges to a local minimum solution due to the lack of low-frequency content. In this paper, we propose a new FWI technique using towed-streamer data, its integrated data sets and limited OBS data. Both integrated towed-streamer seismic data and OBS data have low-frequency components. Therefore, at early iterations in the new FWI technique, the OBS data combined with the integrated towed-streamer data sets reconstruct an appropriate background model. And the towed-streamer seismic data play a major role in later iterations to improve the resolution of the model. The new FWI technique is tested on numerical examples. The results show that when starting models are not accurate enough, the models inverted using the new FWI technique are superior to those inverted using conventional FWI.

中文翻译：

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组合拖缆的全波形反演和有限的OBS地震数据：理论研究

在海洋地震石油勘探中，拖缆数据的全波形反演（FWI）用于重建速度模型。但是，由于缺乏低频内容，拖缆数据的FWI很容易收敛到局部最小解。在本文中，我们提出了一种新的FWI技术，该技术使用拖缆数据，其集成数据集和有限的OBS数据。集成的拖缆地震数据和OBS数据均具有低频分量。因此，在新的FWI技术的早期迭代中，OBS数据与集成的拖曳拖缆数据集相结合，重建了合适的背景模型。拖缆地震数据在以后的迭代中起着重要作用，以提高模型的分辨率。新的FWI技术已通过数值示例进行了测试。