Abstract:

Grey association analysis is a useful method with multiple parameters, i.e. through integrating many dynamic and static parameters,such as micro-facies,production well affecting factor, and etc, to predict remaining oil distribution.Moreover, through the modifying weight coefficient's calculating method with multiple major factors, it is much easier to evaluate remaining oil distribution according to different reservoirs' characteristics. This method can be divided into three steps: first, static geology study; second, dynamic production analysis; and third, synthesis valuation with grey association analysis. With grey association analysis, it is available to evaluate remaining oil distribution on HB reservoir in Xijiang 30-2 oilfield and is consistent with the actual production data.

Key words: remaining oil distribution, grey association analysis, micro-facies