稠油热采注汽系统能效评价研究

发布时间：2018-04-30 07:49

本文选题：稠油热采注汽系统 + 能效评价　；参考：《东北石油大学》2017年硕士论文

【摘要】：稠油热采是稠油油藏开发最有效的技术手段之一。稠油热采注汽系统主要由蒸汽发生器(以下称“注汽锅炉”)、蒸汽输送管道及附件等组成,研究稠油热采注汽系统能效评价,可以为注汽系统节能降耗提供一定的理论指导。本文分析稠油热采注汽系统的组成、工作原理及其能耗分布情况,研究确定注汽系统能耗的计算方法,包括注汽锅炉热效率、蒸汽输送管道以及系统的能耗计算,在此基础上,进行稠油热采注汽系统能耗影响因素分析研究。根据测试具体要求将注汽锅炉的测试划分为一级测试、二级测试和三级测试共三个测试级别,并进行注汽锅炉热效率计算方法的研究,同时针对三级测试的注汽锅炉分析研究其能效综合评价方法。通过对稠油热采注汽系统的能耗分析及现场的实际情况,综合考虑相关的测试和评价标准,建立稠油热采注汽系统的能效评价指标体系,分别为注汽锅炉的热效率、排烟温度、空气系数和炉体环表温差,蒸汽输送管道环表温差,疏水阀的漏汽率,注汽井口表面温度以及注汽系统的能源效率,确定各项指标的计算方法及其限值。最后,研究确定稠油热采注汽系统能效综合评价方法,并在理论研究的基础上,进行实例分析。注汽锅炉是稠油热采注汽系统的主要耗能设备之一,注汽锅炉的高效运行对稠油热采注汽系统节能降耗工作至关重要。因此,本文在分析研究注汽锅炉结构、工作原理和能耗情况的基础上,对注汽锅炉进行改造,回收利用注汽锅炉排出的高温饱和水的余热,并通过实例分析,验证其可行性和节能效果,结果表明该方法能够取得较好的节能效果。
[Abstract]:Thermal recovery of heavy oil is one of the most effective techniques for heavy oil reservoir development. The steam injection system for thermal recovery of heavy oil is mainly composed of steam generator (hereinafter referred to as "steam injection boiler", steam conveying pipeline and accessories, etc.) the research on energy efficiency evaluation of steam injection system for thermal recovery of heavy oil can provide certain theoretical guidance for energy saving and consumption reduction of steam injection system. In this paper, the composition, working principle and energy consumption distribution of steam injection system for thermal recovery of heavy oil are analyzed, and the calculation method of energy consumption of steam injection system is studied, including heat efficiency of steam injection boiler, steam conveying pipeline and energy consumption calculation of system. The factors affecting energy consumption of steam injection system for thermal recovery of heavy oil were analyzed and studied. According to the specific requirements of the test, the test of steam injection boiler is divided into three levels: the first test, the second test and the third test. The thermal efficiency calculation method of steam injection boiler is studied. At the same time, the comprehensive evaluation method of energy efficiency of steam injection boiler based on three-level test is studied. Based on the energy consumption analysis of steam injection system for thermal recovery of heavy oil and the actual situation on the spot, the energy efficiency evaluation index system of steam injection system for thermal recovery of heavy oil is established by considering the relevant test and evaluation criteria, which are respectively the thermal efficiency of steam injection boiler and the exhaust gas temperature. Air coefficient and furnace surface temperature difference, steam conveying pipeline ring surface temperature difference, steam leakage rate of trap valve, steam injection wellhead surface temperature and energy efficiency of steam injection system are determined. The calculation method and limit value of each index are determined. Finally, the comprehensive evaluation method of energy efficiency of steam injection system for thermal recovery of heavy oil is established, and an example is analyzed on the basis of theoretical research. Steam injection boiler is one of the main energy consuming equipments in the steam injection system for thermal recovery of heavy oil. The efficient operation of steam injection boiler is very important to the energy saving and consumption reduction of steam injection system for thermal production of heavy oil. Therefore, on the basis of analyzing and studying the structure, working principle and energy consumption of steam injection boiler, the steam injection boiler is reformed to recover the waste heat from high temperature saturated water discharged by steam injection boiler. The feasibility and energy-saving effect of the method are verified, and the results show that the method can achieve better energy-saving effect.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE934.4

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