地面集输玻璃钢管结蜡原因与机理分析研究

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中文摘要：某油田地面集输玻璃钢管线投产后出现蜡堵,严重影响油田正常生产.为了确定玻璃钢管结蜡原因与机理,从具有不同结蜡程度的3 条在役玻璃钢管线截取试样,开展宏观检查、理化试验和润湿性分析等对比试验研究.结果表明,该3 条玻璃钢管试样的成分结构、树脂含量、硬度和固化程度未见明显差异,符合玻璃钢管的标准要求,它们对柴油均表现为超亲油状态,润湿性未见明显差异.结蜡程度的不同主要是由管道运行温度所致,低流速、低气液比加速蜡沉积.玻璃钢管结蜡机理与钢质管道基本一致,为分子扩散机理,但玻璃钢管的临界表面张力、导热系数和粗糙度更低,使其不易发生蜡晶的沉积与聚集,展现出更佳的防结蜡性能.通过降低管材表面张力和实现疏油状态,将是提升玻璃钢管防结蜡性能的有效途径.

外文标题：Analysis on the Causes and Mechanisms of Wax Formation in Ground Gathering and Transportation Fiberglass Pipes

外文摘要：After the production of a fiberglass pipeline for surface gathering and transportation in a certain oilfield,wax blockage occurred,seriously affecting the normal production of the oilfield.To clarify the causes and mechanisms of wax formation in fiberglass pipes,samples were taken from three in-service fiberglass pipelines with different degrees of wax formation,and comparative experimental studies were con-ducted,including macroscopic inspection,physical and chemical tests,and wettability analysis.The results showed that there were no sig-nificant differences in the composition structure,resin content,hardness,and curing degree of the three glass fiber reinforced plastic speci-mens,which met the standard requirements of glass fiber reinforced plasticpipe.They all showed a super lipophilic state towards diesel and no significant difference in wettability.The difference in wax deposition degree was mainly caused by the operating temperature of the pipe-line,and low flow rate and low gas-liquid ratio accelerated wax deposition.The waxing mechanism of fiberglass pipes is basically the same as that of steel pipes,which is a molecular diffusion mechanism.However,the critical surface tension,thermal conductivity,and roughness of fiberglass pipes are lower,making them less prone to wax crystal deposition and aggregation,demonstrating better anti-waxing perform-ance.Reducing the surface tension of the pipe and achieving an oil repellent state will be an effective way to improve the anti-waxing per-formance of fiberglass pipes.

外文关键词：

gathering and transmission pipelinewax containing crude oilfiberglass reinforced plastic pipereason for wax formationwax formation mechanism

作者：

李磊、贾福生、孙坤、张欣欣、齐国权、李厚补、朱文峰

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作者单位：

中国石油集团工程材料研究院有限公司,油气钻采输送装备全国重点实验室陕西西安 710077

塔里木油田公司哈得采油气管理区新疆库尔勒 841000

吐哈油田公司吐鲁番采油管理区新疆哈密 839000

关键词：

集输管线含蜡原油玻璃钢管结蜡原因结蜡机理

基金：

国家自然科学基金面上项目陕西省自然科学基础研究计划中国石油天然气集团有限公司基础研究和战略储备技术研究基金

项目编号：

522740692023-JC-QN-04332023DQ03-05

出版年：

2024

DOI：

10.19459/j.cnki.61-1500/te.2024.03.016

石油管材与仪器

中国石油集团东方地球物理勘探有限责任公司

石油管材与仪器

影响因子：0.129

ISSN：1004-9134

年,卷(期)：2024.10(3)

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