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Development and Performance Evaluation of Paraffin and Aromatic Hydrocarbon Synergistic Lotion Wax Remover

  • INNOVATIVE TECHNOLOGIES OF OIL AND GAS
  • Published:
Chemistry and Technology of Fuels and Oils Aims and scope

The chemical paraffin removal agent QLJ-1 was developed by analyzing the composition of crude oil, the wax content and the point of paraffin removal in the wellbore of an oilfield in northwest China. The orthogonal test was used to determine the formula as follows: mixed organic solvent (70% aromatics, alkane volume ratio of 2:2:1) + mixed surfactant (7% Tween-80, AEO-9, fatty acid salt mass ratio of 1:2:1) +23% pure water. The results of kinetics and emulsion stability study show that the saturated wax dissolution amount of QLJ-1 is 1.62 g, the wax dissolution rate is 0.0263 g/min, the wax dissolution equilibrium time is about 1h, and the emulsion stability time is 6 d. The wax dissolving effect of QLJ-1 is better than that of the current paraffin remover. The research results of this paper can provide technical support for improving the chemical paraffin removal process in an oilfield in Northwest China.

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Acknowledgments

This achievement is subsidized by the project of the key laboratory of well stability and fluid & rock mechanics in Oil and gas reservoir of Shaanxi Province, Xi’an Shiyou University (No. WSFRM20210402001), and the Opening Project of Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province (NO. YQKF202010).

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Authors and Affiliations

  1. Geological Research Institute of the 8th oil Production Plant, Petrochina Changqing Oilfield, Xi’an, Shaanxi, China

    Shengzhi Yang

  2. Drilling and Production Engineering Technology Research Institute, Petrochina Chuanqing Drilling Engineering Co., LTD, Xi’an, Shaanxi, China

    Yan Xue

  3. Production and Construction Project Team of the 10th Oil Production Plant, Petrochina Changqing Oilfield, Xi’an, Shaanxi, China

    Dongchao Wang

  4. Oil Production Technology Research Institute of the 5th Oil Production Plant, Petrochina Changqing Oilfield, Xi’an, Shaanxi, China

    Qin Zuo

  5. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan, China

    Xuecheng Zheng

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  1. Shengzhi Yang
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  2. Yan Xue
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Correspondence to Xuecheng Zheng.

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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 122–126, March– April, 2024

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Yang, S., Xue, Y., Wang, D. et al. Development and Performance Evaluation of Paraffin and Aromatic Hydrocarbon Synergistic Lotion Wax Remover. Chem Technol Fuels Oils 60, 382–390 (2024). https://doi.org/10.1007/s10553-024-01692-z

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