注采井间水流优势方向的识别

Recognition of dominant water flowing direction between injectors and producers

对于水驱非均质油田,在高含水后期,识别注入水流优势方向,对指导油田后期剩余油挖潜措施的选择与方案制定具有重要意义.采用灰色关联理论和流体渗流与电流相似原理,提出了用月注水量与产液量的关联度和油水井间渗流阻力值识别水流优势方向的方法.该方法分别与井-地电位法和流线法数值模拟对比,其结果比较吻合.

For water flooded heterogeneous reservoir, determination to dominant injected water flowing direction is of great importance for residual oil exploration in high water-cut stage. Based on gray relation theory and porous flow-electric current similarity principle, this paper presents a direct method for determining dominant water flowing direction between injectors and producers by analyzing the gray's association degree between oil and water wells' monthly volume, and porous flow resistance coefficient. The results are consistent with the results of potential logging and streamline numerical simulation, and useful to instruct the residual oil enhancements and exploring plans in the late oilfield.