| Situated in the south of Daqing Placanticline Saertu Oilfield, the east part of South Seven to Xing One section enjoys an exploitation area of 16.26km2. Separating the whole area into three pieces, two huge faults within this section are typical graben structure. Oil layer discussed in this thesis is unified pressure system, and formation water in this area is NaHCO3 type.. With no active edge and bottom water, the oil deposit is anticline type.With in this area, parameters in the distribution of deposition structure and oil deposit physical features are represented independently, hardly forming a complete underground structure or space concept of reservoir physical features. Based on characteristics of this section, the paper chooses suitable modeling strategy to build a precise 3-D geological model which also requires other statistical data.In this paper, structure model is built under the consideration of constructional drawings and other numerous factors. Also, attribute model(such as porosity, permeability, and oil saturation) is rendered clinging to section characteristics. Fitting original oil in place, finally is calculated and displayed.This paper conducts the numerical simulation research in combination with the established geological model, and sets up the numerical model through the choice of simulator, numerical preparation, and normalization processing and reserves fitting of relative permeability curve. Then, this paper offers the historical analysis of fitting results with the help of the fitting of overall index of there reservoir and index of single well and eventually analyzes the usage condition of reservoir and the potential of remaining oil.In the following parts, different types of polymer flooding are injected into serial well groups [single river-way(thin or thick), double river-way and multiple river-way], with different status of molecular weight, concentration, velocity. Ultimately, optimal recovery program is concluded by this paper. |
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