海上油田二元复合驱驱替规律物理模拟

PHYSICAL SIMULATION OF THE DISPLACING LAWS FOR THE BINARY COMPOUND FLOODING OF OFFSHORE OILFIELDS

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提高原油采收率效果研究.模型上布置的压力记录表和电阻率测量探针,较为准确地测量了模型中压力变化及饱和度场变化,进而评价了二元复合体系的开采效果.实验表明,对于稠油二元体系可以充分发挥前期聚合物段塞增黏与扩大波及体积作用,不仅驱替出主流线上的剩余油,而且通过提高驱油效率的作用驱替出主流线两侧区域内的剩余油,二元驱后剩余油主要存在于采出井之间分流线上.

The researches on EOR effects of the binary compound flooding by means of litho-electric experimental principles and 3 D physical simulation system. The pressure meters and resistivity measuring probe installed on the model can accurately detect the changes of the pressure and saturation fields, and then the production effects of the flooding system are evaluated. The experiments show that for heavy oil binary system, the viscosification of the polymer pre-slug and swept volume enlarging role can be fully played： can not only drive out the remained oil on the main flow lines, but also displace out the remain efficiency. After the binary compound flooding, the producing wells. ed oil on both sides of the lines through improving the displacement the remained oil mainly exists on the shunt lines between/among the producing wells.