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周期注水是一种适用于层状非均质油层的开发方法 ,其原理利用注水量或注水压力的波动 ,在油层中建立不稳定压力降 ,在不同的渗透率小层间产生不稳定交渗流动 ,并使各小层间的流体重新分布 ,从而提高注入水在地层中的波及体积。濮城油田沙二上 1油藏采用间歇注水取得了显著效果。本文系统地叙述了间歇注水的原理、开发方法、特点及适用条件 ,详细分析了间歇注水对油藏的影响效果 ,为多油层高含水油藏后期的控水稳油 ,提供了一个可以借鉴的实例。
Periodic waterflooding is a development method suitable for layered heterogeneous reservoirs. The principle of this method is to utilize the variation of waterflooding or waterflooding pressure to establish an unstable pressure drop in the reservoir and produce unstable cross-permeation between the different layers of permeability Flow, and the redistribution of fluid between the small layer, thereby increasing injection of water in the formation of the volume and volume. Pucheng Oilfield Sha 2 on the 1st reservoir using intermittent water injection has achieved remarkable results. This paper systematically describes the principle of intermittent water injection, development methods, characteristics and application conditions, a detailed analysis of the effect of intermittent water injection on the reservoir for the multi-reservoir high water-cut reservoirs late water control oil, provides a reference Instance.