Abstract：The Permian Lucaogou Formation of the Jimsar Sag in the Junggar Basin, holding an abundant shale oil reserve, is endowed with the resource base for effective productivity construction, and this area is mainly developed by horizontal wells. However, the old seismic data with low signal-to-noise ratio and resolution are exposed to various problems, such as low imaging accuracy for micro-relief structures, difficulty in effectively identifying minor faults and thin reservoirs, and failure to achieve a stable reservoir drilling rate. For the reasons, high-precision 3D seismic data acquisition, processing, and interpretation technologies are needed to solve the above problems and improve the reservoir drilling rate of horizontal wells. The vertical seismic profile (VSP) technology is a geophysical approach for oil and gas field development. Absorption and attenuation, velocity, frequency, and other parameters can be extracted from VSP data and then combined with surface seismic processing to improve the imaging accuracy of seismic data and ultimately provide support for accurately determining the structures and improving the resolution of sweet spot identification. Relying on the pilot 3D shale oil development project in Xinjiang Oilfield, this study combines VSP data-based interpretation results with surface seismic processing and quality control. In this way, the study effectively improves the imaging quality of seismic data and provides a data basis for horizontal well trajectory design in shale oil development.
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