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首页> 外文期刊>Fresenius environmental bulletin >STUDY ON WATER INJECTION DEVELOPMENT OF UNCONSOLIDATED SANDSTONE RESERVOIRS IN SHENGLI OILFIELD, CHINA
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STUDY ON WATER INJECTION DEVELOPMENT OF UNCONSOLIDATED SANDSTONE RESERVOIRS IN SHENGLI OILFIELD, CHINA

机译：胜利油田松散砂岩储层注水开发研究

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It is well known that the unconsolidated sand reservoirs (USR) has high permeability and high oil-water viscosity ratio. Continuous water injection development process will form high permeability and large pore channels in the reservoirs. At the same time, high displacement phase fluidity can easily causes oil-water interface moves fast to the bottom of production wells and reduces final recovery efficiency. In order to solve this problem, a reservoir geological model of A area has been established by analyzing the existing static and dynamic production data. Based on this, the seepage mechanism of USR has been comprehensively analyzed, and evaluates the influence of waterflooding mode (WFM) difference of depth displacement between injector producer pair effect by means of numerical analogue. And then, a new evaluation standard called sum of field oil recovery (SFOE) is introduced, which is defined as the sum of the values of anhydrous field oil recovery (AFOE) and field oil recovery (FOE). The results revealed that, the optimum injection/production ratio based on this evaluation criterion is 1.1, the optimum WFM is low injection and high production. In addition, the result of economic evaluation shows that a higher economic return gets by using this development factor in A area. The evaluation system studied in this paper can effectively increase the sweep area among USR during waterflooding development, and provide a reliable reference for the development of similar reservoirs.
机译：众所周知，疏松砂岩储层（USR）具有高渗透率和高油水粘度比。连续注水开发过程将在储层中形成高渗透率和大孔隙通道。同时，高驱替相的流动性很容易导致油水界面快速移动到生产井的底部，并降低最终采收率。为了解决这个问题，通过分析现有的静态和动态生产数据，建立了A区储层地质模型。在此基础上，对USR的渗流机理进行了综合分析，并通过数值模拟的方法评价了注水生产对对效果之间的水驱方式（WFM）深度差的影响。然后，引入了一种新的评估标准，称为“油田采油量之和”（SFOE），其定义为无水油田采油量（AFOE）和油田油采收率（FOE）的总和。结果表明，基于该评价标准的最佳注射/生产比为1.1，最佳WFM为低注射和高产量。此外，经济评估的结果表明，利用这一发展因素在A地区可获得更高的经济回报。本文研究的评价体系可以有效地扩大水驱开发过程中USR的波及范围，为类似水库的开发提供可靠的参考。

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