水驱储量动用程度计算方法研究

水驱储量动用程度是水驱开发油田的重要指标,准确合理地计算出不同类型油田的水驱储量动用程度,对油田的开发调整具有指导意义.文中从水驱开发效果角度分析,认为水驱储量动用程度等于水驱动用储量与地质储量的比值.利用甲、乙、丙、丁4种水驱曲线表达式,从理论上推导出4种水驱曲线的水驱动用储量计算公式,然后结合水驱储量动用程度定义,就可以进行油田水驱储量动用程度计算.为了能准确可靠地利用目前的研究方法计算实际油田的水驱储量动用程度,对不同油田如何选择适合的方法进行了研究.研究认为,应根据实际油田的含水上升规律特征选择合适的水驱曲线,然后进行水驱储量动用程度计算.

Calculation method of reserves producing degree of water flooding

The reserves producing degree of water flooding is an important index of oilfield water flooding development.The exact and reasonable reserves producing degree is a guiding significance parameter for oilfield development adjustment.This paper starts from the definition which is that water flooding reserves produced degree is equal to the ratio of producing reserves and geological reserves.Four types of water drive curve （Type A,B,C and D） are used to calculate water flooding reserves,and then combined with the definition of reserves producing degree of water flooding,the reserves producing degree of water flooding are calculated.This paper studies how to choose appropriate method according to the water drive curve of different reservoir.It is concluded that is according to the law of water cut rising in actual reservoir,the appropriate water drive curves are chosen,and then,the reserves producing degree of water flooding is calculated.