一种广义水驱特征曲线

广义水驱特征曲线对应油田开发过程中多种含水率（ｆｗ）与可采储量采出程度（Ｒ）关系，使其表达式简单、参数容易求解且适用性很强，这是研究者追求的目标。经推导，提出一种新的广义水驱特征曲线：ｌｇＮｐ＝ａ－ｂｌｇ（Ｌｐ／Ｗｐ）（Ｎｐ为累积产油量，Ｌｐ为累积产液量，Ｗｐ为累积产水量）。选取代表３种含水上升类型的老油田（任丘油田、羊三木油田和濮城油田沙一段油藏）的实际数据，分别代入该式，回归得其相应系数ａ、ｂ，即可确定各自ｆｗ与Ｒ的关系，计算所得预测曲线与实际资料吻合得相当好。图３表１参３（王孝陵摘）

A new generalized water drive curve.

A new generalized water drive curve, i. e. the relationship lg N p= a-b lg L p W p, has been proposed. The water cut f w vs. recovery of recoverable reserves R * corresponding this water drive curve shows that it can describe the different raising pattern of water cut very much. Some examples show its wide applicability for water drive reservoirs, such as the relative error between calculated and actual recoverable reserves of Sha 1 reservoir in Pucheng oil field only is 0.2%, almost equal to 0. This water drive curve is simple and practical. Its appearance has greatly advanced the condition of application for generalized water drive curve, and has great theoretical sense and useful value in the research of water drive curve.