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《Fault-Block Oil & Gas Field》 2017-04
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Quantitative description of remaining oil based on single sand body in fan delta reservoir bed: taking Es_3~3 reservoir in northern region of Liuzan Oilfield in Nanpu Sag for example

FANG Du;JIA Qian;GONG Jingjing;GAO Donghua;YUAN Lixin;YIN Li;Research Institute of Exploration and Development,Jidong Oilfield Company, PetroChina;  
With distinguishing features of fast phase change, strong aeolotropy, complex hydrocarbon water contact in fan delta,study of remaining oil based on sublayer cannot meet the needs of adjustment during the middle-late development stages, and quantitative description of remaining oil for the single sand body in fan delta reservoir bed was launched. Taking Es33 reservoir in the northern region of Liuzan Oilfield in Nanpu Sag as an example, based on the core description, sedimentary structure analysis,electrofacies recognization, and the method of vertical substage and lateral delimitation, single sand bodies and sandstone boundary were identified. Using the method of fractional facies modeling, three-dimensional anisotropic geologic model for single sand bodies were built. The numerical reservoir simulation for single sand body and three indices including remaining oil saturation, remaining oil reserves abundance and remaining oil reserves are used to quantitatively describe residual oil potential of single sand body.Exploration drilling has confirmed that the forecasting results are helpful and accurate, which can effectively direct the fine tapping of the remaining oil.
【Fund】: 国家科技重大专项“渤海湾盆地黄骅坳陷滩海开发技术示范工程”(2011ZX05050)
【CateGory Index】: P618.13;TE327
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