Abstract: Buried hill reservoir s are considered as one of the major hydrocarbon exploration areas in the Liaohe Depression, and the corresponding reservoir space is dominated by microfracture and micropore. The seismic data inside the buried hill is characterized by complicated wave fields and unclear reflections. Traditional reflected wave imaging is limited in the internal structure identification and buried-hill hydrocarbon exploration. A new scattered wave imaging technology was proposed to realize high-resolution seismic data imaging by suppressing seismic reflection wave energy and strengthening scattered wave energy. The weak seismic scattered signal inside the buried-hill can be imaged to characterize the fracture properties within the buried hill under complex geological setting. This technology was successfully applied to characterize the complex structures of Shuguang buried hill zone in Liaohe Oilfield, which could also provide certain reference for the similar seismic data processing.

Key words: buried hill reservoir, scattered wave imaging, scattered wave energy, reflected wave energy, seismic data processing, coherence