用水驱曲线确定经济极限含水率的方法及其应用  

Approach and Application of Determining Economic Limit Water-Cut Using Water Drive Curve Methods

作　　者：陈元千[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《新疆石油地质》2010年第2期158-162,共5页Xinjiang Petroleum Geology

摘　　要：在我国,对于注水开发油田,水驱曲线法是预测油田可采储量的重要方法。该方法的有效应用,有赖于直线段选取的可靠性和极限含水率确定的合理性。然而,对于不同流度注水开发油田,由行业标准统一规定,一律选用98%的含水率作为预测可采储量的作法,不但是不恰当的,也是缺乏理论依据的。对于业已进入中高含水期产量递减的油田,基于以往笔者的研究成果,依据不同的技术经济条件,应用确定经济极限产量的概算法,提出了确定经济极限含水率的方法,并用于水驱曲线法,预测油田的经济可采储量。通过实例的应用表明,该方法是实用有效的。Water drive curve methods are the important approaches for prediction of oilfield recoverable reserves by waterflooding process in China. The effective application of such methods depends on the reliability of linear stage selection and the rationality of limit watercut determination. However, for waterflooding oilfields with variable mobility, it is regulated to only take water-cut of 98% as basis for prediction of recoverable reserves in accordance with existing industry standard. This measure is not only improper, but also short of theoretical basis. Based on the previous study achievements by the author and the varied technical and economic conditions, this paper proposes the method for determination of economic limit water-cut to predict economic recoverable reserves of oil fields that have entered into middle-high water-cut stage characterized by production decline. The case study indicates that this method is practical and effective.

关 键 词：注水开发油田 水驱曲线法 预测 经济极限含水率 经济极限产量 经济可采储量 

分 类 号：TE15[石油与天然气工程—油气勘探] TE313.8