Effect of operating conditions on wax deposition in a laboratory flow loop characterized with DSC technique

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• 作者：Wenda Wang ; Qiyu Huang ; Changhui Wang ; Si Li…
• 关键词：Wax deposition ; Operating conditions ; DSC ; Flow loop ; Deposit composition ; Hardness ; Pigging
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：119
• 期：1
• 页码：471-485
• 全文大小：892 KB
• 参考文献：1. Singh P, Venkatesen R, Fogler HS, Nagarajan NR. Morphological evolution of thick wax deposits during aging. AIChE J. 2001;47:6-8. CrossRef
  2. Hammami A, Ratulowski J, Coutinho JAP. Cloud points: can we measure or model them? Pet Sci Technol. 2003;21:345-8. CrossRef
  3. Li HY, Zhang JJ. A generalized model for predicting non-Newtonian viscosity of waxy crudes as a function of temperature and precipitated wax. Fuel. 2003;82:1387-7. CrossRef
  4. Yan DF, Luo ZM. Rheological properties of Daqing crude oil and their application in pipeline transportation. SPE Prod Eng. 1987;2:267-6. CrossRef
  5. Bern PA, Withers VR, Cairns RJR. Wax deposition in crude pipelines. In: Proceedings of the European Offshore Petroleum Conference and Exhibition; London, UK, Oct 21-4, 1980; Paper EUR 206.
  6. Burger ED, Perkins TK, Striegler JH. Studies of wax deposition in the Trans Alaska Pipeline. J Pet Technol. 1981;33:1075-6. CrossRef
  7. Weingarten JS, Euchner JA. Methods for predicting wax precipitation and deposition. SPE Prod Eng. 1988;2:121-. CrossRef
  8. Hamouda AA, Viken BK. Wax deposition mechanism under high-pressure and in presence of light hydrocarbons. In: Proceedings of the SPE International Symposium on Oilfield Chemistry; New Oreleans, LA, 1993;SPE 25189.
  9. Majeed A, Bringedal B, Overa S. Model calculates wax deposition for North Sea oil. Oil Gas J. 1990;18:52-.
  10. Brown TS, Niesen VG., Erickson DD. Measurement and prediction of the kinetics of paraffin deposition. In: Proceedings of the 68th Annual Technical Conference and Exhibition of the SPE; Houston, TX, Oct 3-, 1993;SPE 26548.
  11. Hsu JJC, Santamaria MM, Brubaker JP. Wax deposition of waxy live crudes under turbulent flow conditions. Proceedings of the 69th Annual Technical Conference and Exhibition of the SPE; New Orleans, LA, Sept 25-8, 1994;SPE 28480.
  12. Matzain A. Single phase liquid paraffin deposition modeling. M.S. Thesis, University of Tulsa, Tulsa, OK, 1996.
  13. Rygg OB, Rydahl AK, Ronningsen HP. Wax deposition in offshore pipeline systems. In: Proceedings of the 1st North American Conference on Multiphase Technology; Banff, Canada, June 10-1, 1998; BHR Group Limited: p. 193-03.
  14. Creek JL, Matzain, A, Apte MS, Brill JP, Volk M., Delle Case E, Lund H. Mechanism for wax deposition. In: Proceedings of the 1999 AIChE Spring National Meeting; Houston, TX, Mar 15-8, 1999.
  15. Matzain A, Apte MS, Zhang HQ, Volk M, Brill JP, Creek JL. Investigation of paraffin deposition during multiphase flow in pipelines and wellbores—part 1: experiments. ASME J Energ Resour Technol. 2002;124:180-. CrossRef
  16. Apte MS, Matzain A, Zhang HQ, Volk M, Brill JP, Creek JL. Investigation of paraffin deposition during multiphase flow in pipelines and wellbores—part 2: modeling. ASME J Energ Resour Technol. 2001;123:150-. CrossRef
  17. Azevedo LFA, Teixeira AM. A critical review of the modeling of wax deposition mechanisms. Pet Sci Technol. 2003;21:393-08. CrossRef
  18. Tinsley JF, Prud’homme RK, Guo XH, Adamson DH, Callahan S, Amin D, Shao SS, Kriegel RM, Saini R. Novel laboratory cell for fundamental studies of the effect of polymer additives on wax deposition from model crude oils. Energy Fuels. 2007;21:1301-. CrossRef
  19. Hoffmann R, Amundsen L. Single-phase wax deposition experiments. Energy Fuels. 2010;24:1069-0. CrossRef
  20. Aiyejina A, Chakrabarti DP, Pilgrim A, Sastry MKS. Wax formation in oil pipelines: a critical review. Int J Multiph Flow. 2011;37:671-4. CrossRef
  21. Singh
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

In this paper, an experimental study about the influence of operating conditions in a laboratory flow loop on wax deposition phenomena by using DSC technique is presented. The operating conditions studied were oil temperature, wall temperature, temperature difference (between the bulk and the ambient), and flow velocity. Results were obtained and explained in terms of deposition rate and wax deposit composition (DSC curve shape). So that higher deposition rate was obtained for the following cases: oil temperature increasing, wall temperature decreasing, and at lower flow velocities. On the other hand, a wax deposit with heavier hydrocarbons was obtained when all the operating conditions evaluated were increased. These results will facilitate a better understanding of the physic of the wax deposition. Also, it will help in developing “hardness-model of the wax deposit, and thus provide a solid bearing on the pigging operation in petroleum industry.