辽河油区注水开发油田产液量变化规律认识

辽河油区注水开发油田储层类型多样,油品性质多样,运用油藏工程方法,利用不同类型注水开发油藏无因次采出指数与含水关系,明确了不同类型油藏含水变化对产液量的影响规律,并进一步研究了注水开发油藏采液速度与采油速度的关系.分析认为:保持合理的采液速度是中、低含水期油田稳产及高含水期减缓递减的有效手段.该研究可为不同类型注水开发油藏采液速度的优化提供借鉴.

The law of liquid - producing capacity in waterflooding oilfields of Liaohe oil province

There are a variety of reservoirs and oils in the waterflooding oilfields of Liaohe oil province. By using reservoir engineering methods and the relationship between dimensionless oil recovery index and water- cut in different types of waterflooding reservoirs, the impact of water - cut on liquid - producing capacity is understood, and the relationship of liquid withdraw rate and oil recovery rate is further studied. It is believed that, rational liquid withdraw rate is an effective way to stabilize oil production in mid - low water- cut oilfield and to reduce production decline in high water- cut oilfield. This study provides reference to optimization of liquid withdraw rate in waterflooding reservoirs.