Residual Oil Microscopic Distribution Physical Simulation For Waterflooding Reservoir Research

At present, the Xing10～12 section production condition indicates, although the well net consistency has been increased two times in the this section, under th production condition condition, the reservoir still has the high potential. The thin, the bad and outside the table reservoirs used degree are not still high. At present, seeking the residual oil, the reasonable extracting of residual oil is one of primary problem. Begins from the microexamination, with main macroscopic material, the article has studied the section residual oil microscopic distribution type, the distribution shape, formed residual oil the mechanism as well as in the thin ,the bad and outside the table reservoirs' distributionIn the microexamination aspect, the microphysics mold has been improved. The simulation oil and the simulation water have been developed. They are able to substitute the real oil and reservoir's water. They can solidify under some temperature in the core sample. The concretion is reliable and do not affect mutually. after the simulation water deplace the simulation oil in the core sample, the residula simulation oil in the core sample shape is closer to or achieve the residual oil microscopic distributed shape of the reservoir condition. Used the microphysics simulation technology systemically research the residual oil microscopic distributed shape afetr the water, the polymer and the ASP deplace the oil. The deverse residual oil in core sample distributed shape has been mutually compared. Used the glass fills in the sand mold open out the influence residual oil saturation's and the distribution shape's factors. It is discussed the residual oil microscopically to form the mechanism. It is pointed out the residual oil distribution main shape after the displacement, in the different natural core sample. At present, the futher extraction of oil carry on in the thin, bad and outside the table resevoirs. Therefore the reservoirs of the thin, bad and outside the table nature and the development characteristic have been studied. The research indicates the bad and outside the table reservoirs, under the present wells net, as a result of the wells distance, are not used well. The wells net need adjustment. Simultaneously, the oil price is also restricting to adjustment area.used the inspection well to take the core material, the log information and the production performance material have research the residual oil concentrates the area. In view of the different residual oil distribution type, selects the different method carry on the futher extraction of oil. The third wells net's adjustments suit the residual oil of the distribution center. Selection a plan suits the section from given the adjustment plans. Regarding the good reservoir residual oil distribution is scattered, used the polymer displace oil.This article research has the promotion significance to the microphysics simulation development.