Prediction for mixed oil trailing based on Gamma-<i>χ</i><sup>2</sup> distribution function

HE Guoxi; TANG Dongdong; WANG Jianbo; LIANG Yongtu

doi:10.6047/j.issn.1000-8241.2019.01.009

Oil & Gas Storage and Transportation > 2019 > 38(1): 58-65. > DOI: 10.6047/j.issn.1000-8241.2019.01.009

HE Guoxi, TANG Dongdong, WANG Jianbo, LIANG Yongtu. Prediction for mixed oil trailing based on Gamma-χ² distribution function[J]. Oil & Gas Storage and Transportation, 2019, 38(1): 58-65. DOI: 10.6047/j.issn.1000-8241.2019.01.009

Citation:

PDF (2441 KB)

Prediction for mixed oil trailing based on Gamma-χ² distribution function

1.
College of Mechnical and Transportation Engineering, China University of Petroleum (Beijing)//Beijing Key Laboratory of Urban Oil and Gas Distribution Technology
2.
Pipeline Department, SINOPEC Marketing Co. Ltd.

More Information

Received Date: September 08, 2017
Revised Date: October 17, 2018
Available Online: August 20, 2023

Graphical Abstract

Abstract

Abstract

The phenomenon of mixed oil tailing is closely related to the accuracy of batch tracking, the reliability of scheduling plan, and the economy of oil-cutting scheme. Therefore, the accurate description on mixed oil tailing is quite significant to control the mixed oil volume and predict the oil quality. In this paper, the variation rule of mixed oil tailing curve was analyzed, and the simulation model for investigating the asymmetry distribution of the mixing interface was established. Then, the concentration distribution characteristic and its gradient change law were obtained on the basis of the data measured at the mixing interface, and the concentration gradient change curves were approximated by Gamma and Gamma-χ² distribution functions, respectively. The distribution functions were simulated by programming and their key parameters were inverted, the concentration distribution curve of mixed oil was established. Based on this, the relationships between the parameters of pipeline systems and the parameters of distribution functions were analyzed under different boundary conditions and operating modes, and the fitting formula was obtained. Additionally, partial data was applied to predict the whole concentration distribution curve, so as to realize the real-time online prediction on the concentration curve. The research results can provide effective guidance for the prediction of mixed oil volume and the operation of mixed oil cutting.
- mixed oil tailing,
- Gamma-χ² distribution function,
- concentration gradient,
- prediction

FullText(HTML)

References (21)

References

[1]	杨昌群. 输油管线数字化管理的应用[J]. 企业技术开发, 2012(23): 175-176. https://www.cnki.com.cn/Article/CJFDTOTAL-QYJK201223085.htm YANG C Q. Application of digital management of oil pipeline[J]. Technological Development of Enterprise, 2012(23): 175-176. https://www.cnki.com.cn/Article/CJFDTOTAL-QYJK201223085.htm
[2]	李军, 王岳, 李岩. 西部成品油管道顺序输送的混油控制[J]. 油气储运, 2010, 29(2): 110-112. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201002009.htm LI J, WANG Y, LI Y. Contamination control in batch transportation of West Oil Product Pipeline[J]. Oil & Gas Storage and Transportation, 2010, 29(2): 110-112. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201002009.htm
[3]	郑劲, 王大鹏, 赵佳丽, 等. 成品油管道混油进罐切入量的计算分析[J]. 油气储运, 2018, 37(8): 897-901. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201808011.htm ZHENG J, WANG D, ZHAO J, et al. Computation and analysis of cutting volume of the contaminated oil in products pipeline into tanks[J]. Oil & Gas Storage and Transportation, 2018, 37(8): 897-901. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201808011.htm
[4]	杨芳芳, 谭永忠, 郑小彦. 镇杭管道顺序输送中混油的创新处理[J]. 油气储运, 2018, 37(11): 1243-1247. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201811009.htm YANG F, TAN Y, ZHENG X. Innovative treatment of contaminated aviation kerosene during batch transportation of Zhenhai-Hangzhou Products Pipeline[J]. Oil & Gas Storage and Transportation, 2018, 37(11): 1243-1247. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201811009.htm
[5]	马晶, 廖绮, 周星远, 等. 甬绍金衢成品油管道调度计划自动编制软件研制与应用[J]. 石油化工高等学校学报, 2016, 29(6): 86-91. https://www.cnki.com.cn/Article/CJFDTOTAL-SYHX201606017.htm MA J, LIAO Q, ZHOU X Y, et al. The development and application of automatic scheduling software for Yongshaojinqu products pipeline[J]. Journal of Petrochemical Universities, 2016, 29(6): 86-91. https://www.cnki.com.cn/Article/CJFDTOTAL-SYHX201606017.htm
[6]	郭袆. 提高成品油管道混油界面跟踪精度的新方法[J]. 油气储运, 2010, 29(12): 908-909. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201012011.htm GUO Y. A novel method to improve the tracing precision of contamination interface for products pipeline[J]. Oil & Gas Storage and Transportation, 2010, 29(12): 908-909. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201012011.htm
[7]	李欣泽. 成品油管道的混油长度计算方法[J]. 油气储运, 2015, 34(5): 497-499. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201505009.htm LI X Z. Calculation method for length of oil mixtures in product pipelines[J]. Oil & Gas Storage and Transportation, 2015, 34(5): 497-499. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201505009.htm
[8]	王升, 王岳, 刘丽艳, 等. 变径管连接方式对混油长度的影响[J]. 辽宁石油化工大学学报, 2014, 34(1): 56-59. https://www.cnki.com.cn/Article/CJFDTOTAL-FSSX201401015.htm WANG S, WANG Y, LIU L Y, et al. The impact of variable diameter pipe connection mode on mixed oil length[J]. Journal of Liaoning Shihua University, 2014, 34(1): 56-59. https://www.cnki.com.cn/Article/CJFDTOTAL-FSSX201401015.htm
[9]	孙卫鹏, 高锦伟, 沙海涛. 克乌管线航煤输送混油长度计算[J]. 辽宁化工, 2012, 41(5): 91-92. https://www.cnki.com.cn/Article/CJFDTOTAL-LNHG201205041.htm SUN W P, GAO J W, SHA H T. Calculation of contaminated oil volume during batch transportation of aviation fuel in Karamay-Urumqi products pipeline[J]. Liaoning Chemical Industry, 2012, 41(5): 91-92. https://www.cnki.com.cn/Article/CJFDTOTAL-LNHG201205041.htm
[10]	徐向阳, 武士坤. 顺序输送混油回掺的质量控制[J]. 石油库与加油站, 2011, 20(5): 3-5. https://www.cnki.com.cn/Article/CJFDTOTAL-YKJY201105004.htm XU X Y, WU S K. The quality control in back mixing treatment of contaminated oil from batch transportation pipeline[J]. Oil Depot and Gas Station, 2011, 20(5): 3-5. https://www.cnki.com.cn/Article/CJFDTOTAL-YKJY201105004.htm
[11]	程玲. 让管输混油回掺比例最大化[J]. 中国石化, 2010(3): 34. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSH201003015.htm CHEN L. Maximize the blending proportion of mixed oil in pipelines[J]. Sinopec Monthly, 2010(3): 34. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGSH201003015.htm
[12]	郑瑜, 赵会军, 赵书华. 顺序输送汽油与柴油混油回掺试验[J]. 油气储运, 2008, 27(5): 32-34, 65. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY200805010.htm ZHENG Y, ZHAO H J, ZHAO S H. A study on diesel and gasoline mixture in batch transportation process[J]. Oil & Gas Storage and Transportation, 2008, 27(5): 32-34, 65. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY200805010.htm
[13]	赵会军, 张青松, 张国忠, 等. 基于PHOENICS的顺序输送大落差管道混油研究[J]. 石油天然气学报, 2006, 28(4): 139-142. https://www.cnki.com.cn/Article/CJFDTOTAL-JHSX200604040.htm ZHAO H J, ZHANG Q S, ZHANG G Z, et al. On the intermixing of big elevation difference batch pipeline transportation based on PHOENICS[J]. Journal of Oil and Gas Technology, 2006, 28(4): 139-142. https://www.cnki.com.cn/Article/CJFDTOTAL-JHSX200604040.htm
[14]	方利民, 梁永图, 何国玺. 顺序输送环道中弯管结构对混油量的影响分析[J]. 辽宁石油化工大学学报, 2016, 36(3): 24-29. https://www.cnki.com.cn/Article/CJFDTOTAL-FSSX201603006.htm FANG L M, LIANG Y T, HE G X. Analysis on the influence of different pipe bending structures on mixture volume in the sequence transportation experimental loop[J]. Journal of Liaoning Shihua University, 2016, 36(3): 24-29. https://www.cnki.com.cn/Article/CJFDTOTAL-FSSX201603006.htm
[15]	朱峰, 梁静华, 李会朵, 等. 成品油混油切割与掺混试验[J]. 油气储运, 2011, 30(5): 364-368. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201105015.htm ZHU F, LIANG J H, LI H D, et al. Testing on contamination cut and blending for products[J]. Oil & Gas Storage and Transportation, 2011, 30(5): 364-368. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201105015.htm
[16]	刘杰. 成品油管道输送的混油切割技术与处理研究[D]. 西安: 西安石油大学, 2014: 24-35. LIU J. Multi-oil cutting and technology disposal of batch transportation of multi-product pipeline[D]. Xi'an: Xi'an Shiyou University, 2014: 24-35.
[17]	徐燕萍, 左志恒, 徐光春. 成品油长输管道的混油下载与切割[J]. 油气储运, 2010, 29(7): 505-508. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201007010.htm XU Y P, ZUO Z H, XU G C. Contamination unloading and cutting of long-distance oil product pipeline[J]. Oil & Gas Storage and Transportation, 2010, 29(7): 505-508. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201007010.htm
[18]	付英, 张存兰, 贾贞. 混油浓度曲线回归及混油切割点的确定[J]. 德州学院学报, 2003, 19(6): 53-56. https://www.cnki.com.cn/Article/CJFDTOTAL-DZHX200306017.htm FU Y, ZHANG C L, JIA Z. The drawing of the curve of the mixing concentration and determination of the cutting point[J]. Journal of Dezhou University, 2003, 19(6): 53-56. https://www.cnki.com.cn/Article/CJFDTOTAL-DZHX200306017.htm
[19]	翁蕾, 王爱萍. 龙贝格积分法在顺序输送管道混油浓度计算中的应用[J]. 天然气与石油, 2010, 28(6): 6-9. https://www.cnki.com.cn/Article/CJFDTOTAL-TRYS201006002.htm WENG L, WANG A P. Application of Romberg integration method in calculating the contaminated concentration in batch transportation pipeline[J]. Natural Gas and Oil, 2010, 28(6): 6-9. https://www.cnki.com.cn/Article/CJFDTOTAL-TRYS201006002.htm
[20]	蒋连生, 王帅, 张志军, 等. 成品油管道混油拖尾对切割浓度的影响[J]. 油气储运, 2014, 33(8): 848-851. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201408012.htm JIANG L S, WANG S, ZHANG Z J, et al. Effects of mixed oil tailing of products pipeline on cutting concentration[J]. Oil & amp; Gas Storage and Transportation, 2014, 33(8): 848-851. https://www.cnki.com.cn/Article/CJFDTOTAL-YQCY201408012.htm
[21]	雷林平. 基于Savitzky-Golay算法的曲线平滑去噪[J]. 电脑与信息技术, 2014, 22(5): 30-31. https://www.cnki.com.cn/Article/CJFDTOTAL-DNXJ201405011.htm LEI L P. Curve smooth denoising based on Savitzky-Golay algorithm[J]. Computer and Information Technology, 2014, 22(5): 30-31. https://www.cnki.com.cn/Article/CJFDTOTAL-DNXJ201405011.htm