Abstract: The economics of a steam injection project is detemined by its capitalinvestment and operating cost which in turn depends considerably upon the capacity of steam injection system to generate and handle a large volume of high-temperature and high-pressure fluid This paper gives an attempt to apply the principle of queueing theory, integrated with a M/M/C model of stochastic service system, Linear programming technique, and the technique of marginal analysis to optimize the steam injection system, including optimum size and a combination of steam generating stations, optimum number of steam generators in each station, economie ranges and optimum number of wells controlled by each station. The effect of heavy oil prices on the results of project appraisal is also discussed. A discussion on the Shanjiasi thermal recovery project in Shengli Oilfield is presented as an example.

摘要： 产生和注进大量高速、高温、高压蒸汽是稠油注蒸汽热力开采的主要特征。因此,稠油注蒸汽热采的经济研究工作都应围绕这个中心问题。分析项目的投资和成本是最优经营决策和合理经济评价的基础。在投资和成本构成中,注汽系统占很大比重。本文试图应用随机服务系统M/M/C模型的原理和方法及线性规划技术,结合边际分析法,在寻求注汽服务系统总成本的基础上,优化稠油蒸汽吞吐热力开采的注汽系统的有关参数,包括:注汽站最佳规模、注汽站经济控制井数范围、注汽站最佳控制井数及各种规模注汽站的最优组合,并讨论了不同稠油价格对上述优化结果的影响。最后,将其应用于胜利油田单家寺稠油注蒸汽热采油田。