关键词: 注水系统, 运行方案, 优化模型, 遗传算法, 节能

Abstract: The reasons of low efficiency and high energy consumption in water injection system of oilfield were analyzed. Taking the minimum of injection energy consumption as the objective function and taking the hydraulic equilibrium of the system,injection rate and injection pressure as the constrained conditions,a mathematic model for optimization of operation plan for oilfield's injection system was constructed. The model is concerned to a hybrid optimization design problem with disperse and continuous variables. According to the structural characteristics of the model,a method for solving the hybrid genetic algorithm was worked out. The selection,intercross and variation modes of chromosome were put forward,and the correlative software was also programmed. This method was applied to the optimization of operation plan for high-pressure injection system of an oilfield. A great economic benefit has been gained.

Key words: water injection system, operation plan, optimum model, genetic algorithm, energy saving