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本文介绍了用Hele-Shaw单元对水平井底水驱油的实验研究。调查了水油界面在不同流速和粘度比下的稳定性。获知低流速下油。水粘度相同时，具有采出程度较高的稳定界面。还研究了不稳定流动条件对界面形状和采收率的影响、在粘度比一定时，软高流速通常使见水时的采收率降低。然而多指进形成的某种情况下。高流速的原油采收率比低流速的高。见水时的原油采收率与无因次流速有关。研究了一种新型数值法模拟在Hele-Shaw单元发现的活塞式驱油方式。预测了水油界面推进的相对原油采收率以及压力状态。确定了当粘度比相反时不同流速的单指进。模拟结果一般都与相对的实验数据有较好的吻合性
This paper describes the experimental study of horizontal well bottom water displacement by Hele-Shaw unit. The stability of the water-oil interface at different flow rates and viscosity ratios was investigated. Learn low flow rate of oil. The same water viscosity, with a higher degree of recovery of a stable interface. The effects of unstable flow conditions on the shape and recovery of the interface were also investigated. At high viscosities, soft high velocities usually reduced the recovery of oil in the presence of water. However, more fingering into the formation of a situation. The high rate of recovery of crude oil is higher than that of low velocity. See the water when the oil recovery rate and dimensionless flow rate. A new numerical method was developed to simulate the piston displacement method found in the Hele-Shaw unit. The relative oil recovery rate and pressure status advanced by the water-oil interface are predicted. Determine the viscosity of the opposite when the different flow rate of a finger into. The simulation results are generally consistent with the relative experimental data