A PREDICTION ON THE FAVOURABLE OIL—BEARING PLAYS IN THE FUYU RESERVOIR OF THE SONGLIAO BASIN BY THE APPLICATION OF CHARACTERISTIC ANALYSIS

Applying characteristic analysis,the authors of this paper set up an optimum mod- elling formula of the Fuyu oil reservoir from the study areas of the Xinmin and Fuyu Oil-fields in the Songliao Basin。In this modelling formula seven significant geological vari- ables are selected with various weighed coefficients.According to the value of weighedcoefficients,it is revealed that oil/gas accumulation should be predominantly controlledby the distance from oil-generating center of depression to the accumulation,hydrocar-bon expulsion of the lst section of the Qingshankou Gr.(Fr.)and sedimentary facies inplace rather than other factors.Combined with physical analysis,it is believed that thebest oil/gas prospects in the Fuyu oil reservoirto be located in the Longhupao-Daan ter-race,of which the south area is in the central south of the Huazijing terrace and thewestern clinoform zone of Fu-Xin uplift.