摘要
减阻剂的合理使用可有效降低天然气长输过程中的能耗并提高管道的输气能力,天然气减阻剂减阻效果的科学评价是指导减阻剂在现场合理应用的关键所在。目前国内外现有的减阻效果评价方法在管输现场的使用中有一定的局限性,不能较好地满足现场需要。结合减阻剂减阻机理及管输现场对评价方法的要求,对国内外已用到的3种评价方法进行分析与完善,并提出两种新的评价方法。运用模糊综合评价法对5种评价方法进行优选,得出采用输气效率系数与流量反演求水力摩阻系数联合评价法是评价管输现场减阻剂减阻效果较为合理的方法。根据该评价方法,研发了一套天然气管输减阻剂减阻效果评价软件。在某输气管线的应用中,软件评价分析结果符合现场实际情况,且同时满足了管输技术工程人员和生产管理者的需求。软件操作简单,使用方便,得到了现场工作人员的好评。
The appropriate use of natural gas DRA can effectively reduce the energy consumption during long-distance transportation and improve the capacity of the pipeline. Scientific evaluation of the drag reduction effect is the key to the appropriate use of natural gas DRA in the field. However, there exist some limitations in the drag reduction effect evaluation methods currently Used in the field production, thus these evaluation methods cannot meet the need of the pipeline transportation. With consideration of the drag reduction mechanism and the requirements of pipeline transportation, we analyzed and improved the three evaluation methods used at home and abroad, and proposed two new evaluation methods. After comparing the five methods according to the fuzzy comprehensive evaluation theory, we identified the combination of gas transmission efficiency coefficient evaluation and hydraulic friction coefficient evaluation as the most appropriate evaluation method. Based on the research results, we developed a natural gas pipeline DRA drag reduction evaluation software. The test results of the software from the application to a gas pipeline not only agreed well with the actual situation, but also met the need of both the technical officers and the production managers. The software is approved by the field staff as it was simple and easy to use.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第4期157-165,共9页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油科技创新基金项目(2011D-5006-060)
中国石油管道科技研究中心项目(GDGS-KJZX-2012-JS-173)
关键词
天然气减阻剂
减阻效果
现场评价方法
水力摩阻系数
输气效率系数
natural gas drag reduction agent
drag reduction effect
field evaluation method
hydraulic friction coefficient
gas transmission efficiency coefficient
