【作者】 张雪萍；

【导师】 刘晓燕；

【作者基本信息】 东北石油大学 ， 热能工程， 2011， 硕士

【摘要】 为进一步提高稠油油田采收率,保证油田稳产,我国辽河油田首次采用了SAGD稠油开采技术。SAGD采油技术的实施,虽然缓解了稠油开采难及油田稳产的压力,但井口采出液温度高达170-180℃,引起了较大的剩余热能。针对上述问题,本文进行了深入研究。主要工作如下：1、在国内外余热利用途径的基础上,提出了SAGD采油区余热发电和直接利用相结合的热能梯级利用方案。2、在余热发电系统方案中,选取R134a为循环工质,并以热力学理论为基础,确定了余热发电系统的运行参数,计算了汽轮机的热力参数,得出了系统的发电量。3、从冷凝器换热理论出发,利用MATLAB软件编制了参数计算程序,分析了各设计参数对冷凝器性能参数的影响。在此基础上以冷凝器年总费用为目标函数建立优化数学模型,利用MATLAB软件对其进行优化,确定了最优设计参数。4、在余热直接利用方案中,设计计算了锅炉给水二次预热所需换热器以及生产部门采暖所需换热量。5、对SAGD余热利用方案的经济性和环保性进行了分析。更多还原

【Abstract】 To further enhance heavy oil recovery and ensure stable oil field exploitation, Liaohe Oilfield in China adopted SAGD technology to exploit heavy oil for the first time. Although the implementation of SAGD technology has overcame oil exploitation barrier and succeeded in maintaining constant oil field exploitation, the followed problem is wellhead produced fluid temperature researched up to 170-180℃with much heat wasted. Regarding to the problem above, this paper makes deep research in several aspects. The main works are as follows:1、Based on waste heat utilization method at home and abroad, a set of technical program of cascading use of waste heat is proposed in SAGD oil zone with the combination of generation of electrical energy and direct use.2、In the waste heat power generation system program, R134a is selected as the cycle refrigerant. Based on the theory of thermodynamics, the operating parameters of power generation system are determined; thermodynamic parameters of the turbine are calculated; generating capacity of the system is obtained.3、From the aspect of heat transfer theory in condenser, the parameter calculation program is compiled using MATLAB software, and then the impact of the design parameters on the performance parameters of the condenser is analyzed. On the basis of that, the parameters of condenser are optimized by taking the annual total cost of the condenser as the objective function; optimization model is established using MATLAB software; the most superior technical parameters are determined.4、In the directly use heat program, the number of heat exchangers required in the secondary preheating boiler feed water and the heat of production sectors for heating needed are calculated.5、The economy and environmental protection of SAGD waste heat recovery program are analyzed.更多还原