海上油田二元复合驱平面波及规律室内物理模拟研究

The Physical Simulation of Binary Flooding Flat Affect Law of Offshore Oilfield

利用岩电实验原理与三维物理模拟系统进行了二元复合驱波及规律研究。通过模型上布置的压力记录表和电阻测量探针,较为准确的测量了模型中压力变化及饱和度场变化,进而研究了二元复合体系波及效果。结果表明,在二元体系主要扩大了低渗层的波及体积且提高了模型整体洗油效率,二元驱后中低渗层主流线两侧未波及,采出井之间分流线上由于边界及注采井的影响存在未波及区域。

Principle of litho electric experiment and three-dimensional physical simulation system were used to research the swept law of binary.By the pressure recorder and resistivity measuring probe installed on the model,the change of the pressure and saturation in the model was accurately measured and swept law of the binary compound flooding system was evaluated.The results showed that the swept volume of low permeability layer was expanded by the binary system,and the sweep efficiency of the model was also improved.After binary flooding,the unswept areas mainly concentrated on both sides of the mainstream line in the layer of low and middle permeability,and there is unswept areas shunt online between the production wells because of the influence of border and injection-production well.