Abstract: The “ Discovery” software was imported from U.S.A. It is an integrate reservoir description software package on the basis of microcomputer platform, with comprehensive functions as seismic data fine description, multiple well logging interpretation, reservoir prediction and geology study, etc.. Using that software package to fine description of the Karamay formation in the District No.4 reservoir,expected results were obtained, providing reference basis for rolling development of the oilfield.

Key words: Karamay oilfield, reservoir description, seismic exploration, logging interpretation, reservoir descrip-tion, "Discovery" software, application