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Seismic identification of channel sandbodies in the Fuyang oil layer in North Songliao Basin, China
Author(s): 
Pages: 127-132
Year: Issue:  2
Journal: APPLIED GEOPHYSICS

Keyword:  Seismic techniqueFuyang oil layerchannel sandfrequency spectrum imagingazimuthal anisotropy;
Abstract: The Fuyang oil-layer in North Songliao Basin is characterized by thin interbedded sands and shales, strong lateral variation, strong reservoir heterogeniety, and so on. The thickness of individual sand layers is generally 3 - 5 m. Identifying the channel sand-bodies of the Fuyang oil layer using seismic techniques is very difficult due to the low seismic resolution. Taking the GTZ area as an example, we discuss the genetic characteristics of the channel sand-bodies and point out the real difficulty in using seismic techniques to predict the channel sand-bodies. Two methods for the identification of channels are presented: frequency spectrum imaging and pre-stack azimuthal anisotropy. Identifying the channel sand-bodies in Fuyu oil-layer using the two seismic methods results in a success rate up to 80% compared with well data.
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