Abstract
Summary Complex structure, fault development and thin reservoirs are three main characteristics of Liaohe oilfield in Eastern China. And the development is difficult due to the low resolution of surface seismic data in this area. To accurately evaluate and predict the reservoir, identify small faults and implement the micro structure, as well as predict the distribution range of the oil sand body, a 3D VSP survey was conducted. In this paper, the 3D VSP project in Liaohe oilfield is taken as an example to demonstrate the 3D VSP technology and its application in structural imaging. After interpretation and fault recognition, small faults which were not seen on surface seismic data are shown up on VSP image. Analysis shows that the 3D VSP has a good impact on oil and gas exploration and development.
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