关键词: 油田开发, 开发中后期, 产量预测, 优化设计, 数学模型, 提高采收率

Abstract: A systematic model for stable oil outputs planning during middle to late waterflooding stage has been proposed,based on the previous article. In that paper,a set of dynamic relationships between dynamic performances (oil production rates,water cut,reservoir pressure) and stimulation measures were formulated by the use of the data listed in the monthly reports through a multi-step physical analysis and system identification approaches with filtering functions which are basic equations for studing this subject. Under the condition of meeting the needs for oil, production defined by national planning, an optimal control model has been developed to maximize economical profits and secondary oil recovery, by which the planning could be fulfilled automatically by solving it. Calculation procedures are suggested and, actual field application effects are examined.