Identification of subtle oil/gas reservoir in Junggar Basin

The paper uses the spectral factorization technique, full 3-D visualization and full 3-D data volume interpretation technique in such 3-D work zones as C-43 well, G-8 well and S-4 well etc (situated in the east part, northwest margin and hinterland of the basin respectively), effectively predicting the spatial distribution of channel and lithologic body of reservoir and identifying the boundary and size of lithologic trap. A large scale of lithologic oil/gas reservoir in S-31 well was discovered after successful application of these three techniques, which provided a new idea for exploration of subtle oil/gas reservoir in Junggar Basin. It is well worth notice that it should select appropriate interpretation approaches when study of subtle oil/gas reservoir, which can succeed.