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首页» 过刊浏览» 2017» Vol. 2» Issue (1) 86-101     DOI : 10.3969/j.issn.2096-1693.2017.01.009
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成品油管道打孔盗油量测算方法
何国玺,梁永图,李岩松,刘胜利,吴梦雨,谢成,席罡,李丰
1 中国石油大学(北京)城市油气输配技术北京市重点实验室, 北京 102249 2 中国石化销售华南分公司, 广州 510620 3 中石化北海液化天然气有限责任公司, 北海 536000
Calculation methods for the amount of oil stolen by drilling holes in product pipelines
HE Guoxi, LIANG Yongtu, LI Yansong, LIU Shengli, WU Mengyu, XIE Cheng, XI Gang, LI Feng
1 Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum-Beijing, Beijing 102249, China 2 SINOPEC Sales Company South China Branch, Guangzhou 510620, China 3 Sinopec Beihai Liquefied Natural Gas Limited Liability Company, Beihai 536000, China

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摘要  打孔盗油的事故危害很大,不仅会造成油品损失、影响管道正常运行,还极易发生爆炸、泄漏、污染环境等二次事故。目前的研究着重于从管理和技术角度,对盗油事故进行甄别,并进行定位,但对盗油量的计算研究较少。分析了打孔盗油过程中整个管道系统的水力瞬变,以打孔盗油点、变径点、批次界面和阀门等为边界条件,建立了打孔盗油模型。根据盗油过程上下游压力、上游流量和温度等参数的变化,计算了整个盗油过程的瞬时盗油流量和累计盗油量。现场实验及盗油量测算结果表明:(1)孔口自由出流和短管出流的出流系数差别较大,因此计算盗油量时,应考虑阀门的局部摩阻、盗油管线摩阻、盗油罐车内的油品压力等参数;(2)对盗油速率和累计盗油量影响从大到小的参数依次是:盗油点孔径(阀门开度)、盗油管段上下游压力变化、流量、温度;(3)输量越小、压力越高、压力波动程度越大,模型计算结果精度越高。
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关键词 : 成品油管道, 打孔盗油, 水热力瞬变, 盗油量测算
Abstract

  Stealing oil by drilling hole brings great harm, including the oil loss, the negative influence on normal pipeline operation and risks of potential explosion, leakage and environmental pollution. At present, many researchers aim to identify the problems and have put forward some preventive measures, but few focus on the calculation of the loss. The transient hydraulic properties of the whole pipeline system during the process of oil theft by hole drilling is analyzed. Considering boundary conditions of the oil-stealing point, diameter-changing point, batch interface and valves, the model is established. Based on the pressure, flow rate and temperature, the transient and accumulated volume of stolen oil are given. The results show that: (1) the orifice free flow is different from short-pipe out flow, therefore the valves friction, the friction of the short oil-stealing pipe and the inside pressure of the oil-stealing tankers should be taken into in calculation; (2) The parameters influencing the amount of oil stolen can be ranked from large to small, namely the size of orifice, the pressure, flow rate and temperature; (3) The model has relatively better accuracy when the flow rate is lower, the pressure is higher and the pressure fluctuation is higher.

Key words: products pipeline oil stolen by hole drilling hydraulic and thermal transient process calculation for the amount of oil stolen
收稿日期: 2016-11-09     
PACS:    
基金资助:国家自然科学基金项目“成品油管道批次输送过程中的复杂传热传质机理研究”(51474228)、北京市科学研究与研究生培养共建项目科研项目“成品油管道泄漏量预测及停输方案的优化研究”(ZX20150440)联合资助
通讯作者: 梁永图 liangyt21st@163.com
引用本文:   
何国玺,梁永图,李岩松,刘胜利,吴梦雨,谢成,席罡,李丰. 成品油管道打孔盗油量测算方法[J]. 石油科学通报, 2017, 2(1): 86-101. HE Guoxi, LIANG Yongtu, LI Yansong, LIU Shengli, WU Mengyu, XIE Cheng, XI Gang, LI Feng. Calculation methods for the amount of oil stolen by drilling holes in product pipelines. Petroleum Science Bulletin, 2017, 2(1): 86-101.
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