Abstract: The technology of seismic attribute has been improved a lot in the past few years, and has been widely used to structure interpretation, reservoir prediction, reservoir description, etc. However, it does not perform so well in lithology identification quantitatively. Taking Dafeng-Xinghua Area as an example, drilling and three-dimensional seismic data are used for fine calibration, some lithologic attributes are selected for lithology identification quantitatively by attribute collection and analysis on the basis of fine structure interpretation. It is found that amplitude attribute could be used to identify volcanic rock, marl, sandstone and mudstone, and their boundary lines in terms of amplitude attribute are confirmed, which matches well with actual drilling, providing very good evidence for sand prediction and reservoir prediction.

Key words: seismic attribute, structure interpretation, reservoir prediction, reservoir description, lithology, volcanic rock, sandstone, mudstone, amplitude