Research Of The Geologic Characteristics And Development Schema Of The SuiZhong 36-1 Oil Field

The SZ36-1 oilfield,located in Liaodong Bay of Bohai Sea,is the first big oilfield with the reserve of 100-million-ton and discovered in Bohai Sea in 1987.This oilfield belongs to heavy oilfield and it is the biggest self-run oilfield developed by CNOOC.In view of none of oilfields such as this large-scale heavy oilfield in the sea has been developed in the whole world and there is no experiment to copy,based on basic data collection,this paper systematically analyzes and compares the of structure,sediment and other geological characteristics;studies the numerical simulation of remaining oil distribution and the predicts the developing effects in practical program of SZ36-1 based on the fitting ratio which succeeds 90% by the primitive model;designs the virtual scheme of SZ36-1 according the Beisanxi of Daqing and proceeds the numerical simulation study;compares and analyzes the virtual program and the practical program in the end.Through the study,in the stage of base layer system for the virtual developing model of SZ36-1,the rising velocity of water cut is faster than practical model,but the recovery percent is lower than practical model;the rising velocity of water cut is slower and the recovery percent rising more quickly after encrypting;the effects of polymer flooding are obvious and the rising velocity of water cut can be controlled effectively after five point polymer injecting towards base layer system I.In comparison with the practical scheme,the virtual model can alleviate the contradiction between interlayers and control the rising velocity of water cut effectivly.