GC区块提高注汽系统热效率技术研究与应用

发布时间：2018-03-22 16:24

本文选题：注汽系统　切入点：热损失　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：蒸汽吞吐与蒸汽驱热力采油方法是开采稠油的主要工艺技术,注汽系统在生产运行的各个环节中存在着不同程度的热能损失。经热损失检测,GC区块地面固定注汽管网热流密度为391W/m2,高于国家标准209w/m2,严重影响热采的经济效益。因此需优选高效保温材料与保温结构,维持管输蒸汽的温度与干度,大幅改善稠油热采效果,提高稠油开采经济效益。本文通过对注汽系统热损失的研究与分析,从优选保温材料、优化保温结构、锅炉参数实时监测几个方面着手,研究出一种符合现场实际、提高注汽系统热效率的方法,并进行现场试验。最终实现了注汽管线平均面热流密度由391w/m2降至115w/m2、单位千米热损失率由4.15%降至1.08%,改善了传统的高温管道隔热保温材料存在保温层厚、接缝过多、附着力及防水性差等缺点,达到了提高注汽系统热效率的目的。研制出一种用于注汽管线保温的“嵌扣”式新型保温结构,一改原硬质材料的平口连接,增强了结构牢固性、减少了管线热量损失。同时,我们根据现场实际情况,分别设计了种规格型号的保温结构,适用于φ114mm和φ76mm两种规格注汽管线。解决了注汽管线热损失严重的问题,提高了注汽锅炉智能化控制水平,减少了系统热损失,进一步夯实油田增产、稳产的基础保障。
[Abstract]:Steam huff and puff and steam drive thermal recovery are the main technology for heavy oil recovery. The heat flux of fixed steam injection pipe network in GC block is 391W / m ~ 2, which is higher than the national standard 209w / m ~ 2, which seriously affects the economic benefit of thermal recovery. Therefore, it is necessary to select high efficient insulation materials and insulation structures, By maintaining the temperature and dryness of steam transmission, improving the thermal recovery effect of heavy oil and increasing the economic benefit of heavy oil recovery, the heat loss of steam injection system is studied and analyzed in this paper. In order to improve the thermal efficiency of steam injection system, a method of real-time monitoring of boiler parameters has been developed, which accords with the actual situation on the spot and improves the thermal efficiency of steam injection system. Finally, the average surface heat flux of steam injection pipeline is reduced from 391w/m2 to 115w / m ~ 2, and the heat loss rate per kilometer is reduced from 4.15% to 1.08%, which improves the thickness of insulation layer and too many joints in the traditional heat insulation material of high temperature pipeline. The disadvantages of poor adhesion and waterproofing have achieved the purpose of improving the thermal efficiency of steam injection system. A new type of "clasp" type insulation structure for steam injection pipeline insulation has been developed, and the flat connection of the original hard material has been changed to enhance the structural soundness. The heat loss of pipeline is reduced. At the same time, according to the actual situation in the field, we have designed the insulation structure of one kind of specification model, which is suitable for 蠁 114mm and 蠁 76mm steam injection pipeline, and has solved the serious problem of heat loss of steam injection pipeline. The intelligent control level of steam injection boiler is improved, the system heat loss is reduced, and the basic guarantee of increasing production and steady production of oil field is further strengthened.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44

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