关键词: 暋注水 , 采油 , 油藏 , 数值模拟

Abstract: Because of Most of the oil fields have come into the high water content exploitation period, and the water injection rate increased rapidly. So to improve and meliorate the efficiency of oil field surface water injection system has become one of the important tasks in the oil field water production process. It is necessary to study the distribution rules of oil and water's movement in the oil extraction process of oil deposit. Twodimensional numerical simulation to water injection of oil extraction was maole and the regularities of distribution of water and oil was analyzed in the flat surface boundary during the process of oil extraction. This result of the study shows that at the simulation of flat surface boundary from exploitation to flow field, the distribution of the shape of water stability in the oil deposit passed through round, irregular ellipse, and topped with three oil wells like an irregular patterning. Oil distribution of the shape in the oil deposit was the range of total simulation minus water. Although stress can improve the range of oil's flushing out, the effect would be reduced by times of pressure strengthen. There is a constant cabin altitude state which is similar to a triangle and topped with three oil wells in simulation range, and this field keeps the same after the whole simulation process is stable. 

Key words: Water injection , Oil extraction ,  Oil deposit ,  Numerical simulation