Reservoir characterization: how broadband wide-azimuth and high-density seismic can help

作者：Shaohua Zhang, Qianggong Song · 发表于：Journal of Geophysics and Engineering · 年份：2025 · DOI：10.1093/jge/gxae128 · 被引用次数：6 · 研究领域：Seismic Imaging and Inversion Techniques、Hydraulic Fracturing and Reservoir Analysis、Reservoir Engineering and Simulation Methods

Abstract This paper discusses how broadband wide-azimuth and high-density seismic exploration has been used to characterize deep-buried hydrocarbon reservoirs as well as fractured carbonate and tight sandstone reservoirs in complex areas. Deeply buried hydrocarbon reservoirs with complex structures can be delineated with improved seismic imaging results due to improved fold, azimuth, and offset coverage; fractured carbonate and tight sandstone reservoirs often exhibit strong anisotropy with fractures being the major fluid pathways, and examination of the resultant azimuthal changes in P-wave attributes can provide us with a better definition of their internal structures. In addition, the improved frequency bandwidth of broadband seismic data can provide us with higher seismic resolution than conventional data and better characterization of reservoir heterogeneity, such as lateral variations of sand channels and small slip fault systems. Current practice and various examples have shown that broadband wide-azimuth and high-density three-dimensional (3D) seismic exploration is the undoubted leading-edge tool for exploring the remaining oil in complex reservoirs, and it plays a crucial role in improving reserve growth and hydrocarbon recovery, to meet the ever-increasing energy demand worldwide.