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Yang Zuguo, Wang Lei, Cheng Zhongfu, He Long, Li Shujie. Dispersion and removal of asphaltene in heavy oil, Tahe Oilfield[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2014, 36(s1): 99-103. doi: 10.11781/sysydz2014S1099
Citation: Yang Zuguo, Wang Lei, Cheng Zhongfu, He Long, Li Shujie. Dispersion and removal of asphaltene in heavy oil, Tahe Oilfield[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2014, 36(s1): 99-103. doi: 10.11781/sysydz2014S1099
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Dispersion and removal of asphaltene in heavy oil, Tahe Oilfield

doi: 10.11781/sysydz2014S1099

  • Engineering and Technology Institute, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China

  • Received Date: 2014-10-15
  • Rev Recd Date: 2014-12-05
  • Publish Date: 2014-12-28
    Abstract
  • Due to the high content of asphaltene in crude oil in the Tahe Oilfield, wellbore plugging was very common as reservoir/wellbore pressure and temperature field changed in oil production process. With X-ray fluorescence spectrometry, component analysis and solvent extraction method, the plugging composition was analyzed, among which over 90% was organic matter. Asphaltene accounted for over 38% in the organic matter. A new asphalt plugging removal agent was innovated and evaluated. The highest dissolution rate at 60 ℃ could reach 2.956 mg/(mL·min). For the crude oil with colloid unstable index bigger than 0.9, asphaltene deposition could be inhibited by adding the new asphalt plugging removal agent with mass concentration of 1%.

     

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