Surfactant/Polymer Flooding Reservior Engineering Plan Design In Block Jin16

Block Jin16is a high porosity and permeability reservoir. After more than30yearswater flooding, the reservior is well developed, and reached the type I reservior developmentlevel. At present, the recovery factor is46.3%; the recoverable reserves recovery factor is90.6%; and the oil production rate is only0.5%. The reservior has been in the middle andlater periods of development. The remaining oil is quite dispersed. Long time water floodinghas intensified the heterogeneity among and in layers, also maked a lot of water floodingineffectually. If continue to keep on water flooding, the potentiality will be small; theadjustment will be difficult; the EOR will be little. The changing development style study isneeded.This research fully adsorbs the successful tertiary oil recovery practices of Daqing andDagang Oil Field, and combines the Liaohe Oil Field features. The plan designs Block Jin16should be developed by surfactant/polymer flooding. The geological research unit is first upto the polylaminated rhym to depict detailedly the polylaminated rhym reservior feature.Combining the dynamic monitoring, dynamic analysis, numerical reservoir simulation andother ways, it comes up with the new remaining oil spreading mode which the oil is controledby gravity, interlayer and interbed, to quantize the remaining oil in the polylaminated rhym.On this basis, use different ways like numerical reservoir simulation, physical simulation andreservior engineering to optimize the design of chemical flooding experiment plan. Optimizethe developing bed series and the injecting sections, individually designs the injection andproduction parameters, to guide the surfactant/polymer flooding plan for spot performance.