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Chemical Method for Inhibition of Wax and Scale Deposition in Low-Permeability Reservoirs

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Chemistry and Technology of Fuels and Oils Aims and scope

The goal of this work was to optimize a chemical method for preventing wax and scale deposition in the aqing Yushulin oil field (China). We studied the characteristics of the crude oil and the water injected into the formation in different sections of the oil field. Preliminary testing of the compositions for wax and scale removal was done as applied to this oil field, and we determined the optimal concentrations of the reagents. We estimated the wax dissolution rate, the effectiveness of wax and scale inhibition, and the degree of viscosity reduction in the crude oil. The reagents were chemically modified with the aim of improving their effectiveness. The process of wax crystallization in the crude oil containing wax inhibitors was studied by differential scanning calorimetry.

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Authors and Affiliations

  1. Key Laboratory of Enhanced Oil & Gas Recovery under Ministry of Education, Northeast Petroleum University, Daqing, China

    Dongqi Niu & Shanzhe Wang

  2. Daqing Yushulin Oilfield Company Ltd., Daqing, China

    Jianwei Liang

Authors
  1. Dongqi Niu
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  2. Jianwei Liang
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  3. Shanzhe Wang
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Corresponding author

Correspondence to Dongqi Niu.

Additional information

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 33 – 36, November – December, 2014.

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Niu, D., Liang, J. & Wang, S. Chemical Method for Inhibition of Wax and Scale Deposition in Low-Permeability Reservoirs. Chem Technol Fuels Oils 50, 494–500 (2015). https://doi.org/10.1007/s10553-015-0555-3

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  • DOI: https://doi.org/10.1007/s10553-015-0555-3

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