Petroleum Processing and Petrochemicals ›› 2020, Vol. 51 ›› Issue (10): 7-15.

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ADVANCES OF INHIBITION AND PLUG REMOVAL TECHNOLOGY FOR ASPHALTENE DEPOSITION

  

  • Received:2020-06-15 Revised:2020-04-30 Online:2020-10-12 Published:2020-10-27

Abstract: There are many living examples of asphaltene deposition in crude oil all over the world, which bring great difficulties to crude oil exploitation and post-treatment. It is of great significance to study asphaltene deposition inhibition technology and unblocking technology. The inhibition technologies of asphaltene deposition in oil wells are reviewed, including adjusting production parameters and adding chemical inhibitors, such as natural fatty acid organic compounds, surface active substances containing benzene rings, processed products of vegetable oils or oils, ionic liquids and metal oxide nanoparticles. The plugging removal technology of asphaltene deposition is introduced, including mechanical method, chemical method, thermal method, biological method, external force field, composite plugging removal method. The future development trends of asphaltene deposition inhibition and plug removal technology are analyzed. It is necessary to evaluate, analyze and predict oil wells or pipelines in advance, and study the mechanism of sedimentation inhibition and plug removal in depth, clarify the adaptability of different technologies, and strengthen the research and application of composite plug removal technology.

Key words: asphaltene, deposition, inhibitor, plug removal, dispersant