| At present, all current big oilfields have entered the development phase of medium andhigh water cut period. With the rise of the water content, the distribution of remaining oilturns to highly dispersed and local relatively concentrated and large discontinuous areas.Therefore, the old reservoir description method and the precision have been far from meetingthe development requirements of the stage. It requires more precise, accurate, quantitativeprediction of all kinds of interwell sand bodies, especially big sand bodies’ interiorheterogeneity and the three-dimensional distribution laws of small sand bodies It reveals thedistribution features of structure and distribution of interlayer and a three-dimensionalquantitative geological model can be established to reflect the objective situation andunderground fine description of reservoir heterogeneity so as to sum up the distribution lawsof the remaining oil space, adjust the corresponding injection structure and ultimately enhanceoil recovery.In this essay, fine water flooding research is conducted in192area in southern Saertu ofHonggang. Fine reservoir descriptive research of the development of ultra-high water cutstage is conducted on the basis of the various static data within the region of the core,deposition setting and borehole log. Standard region in thick layer and interlayer isolation arestudied. And the reservoirs could be further divided into the single sand body level. Itdescribes the development in the area of each single sand body and isolating, dissection,distribution and shielding effect. The factors of formation of the remaining oil in the regionare explored and distribution laws and potential situation are studied with various dynamicmonitoring data. The accurate location of remaining oil concentrated in current waterinjection unit is analyzed and determined. The fine layered water injection mode for Saertureservoir can be found so as to provide technical support for sustainable and efficientdevelopment of reservoir. |
