These reservoirs were characterized by features such as high permeability,strong heterogeneity;high oil viscosity,these reservoir conditions were key to the success of EOR in polymer flooding on the basis of the reservoir polymer flooding techniques used both at home and abroad,the reservoir criteria of polymer flooding were presented.

Contrast of hydrocarbon accumulation conditions and hydrocarbon distributions between Liaodong Bay Fault Depression and Xialiaohe Depression;

Effect of late triassic volcanic sediment event on hydrocarbon accumulation conditions in Ordos Basin;

3%, so it is necessary to carry out systematic analysis of the hydrocarbon accumulation conditions for guiding the oil-gas exploration in the regions.

Deep zone reservoir-forming condition in the frst step of Hu-qing oilfield in the Dongpu sag;

The basin types and reservoir forming condition of circum-Pacific active margins;

Buried hill reservoir forming conditions in the west slope of western sag, Liaohe fault basin;