The Effect of the Inhibitory Composition on the Composition of Paraffin Hydrocarbons in Oil Sediments

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Abstract

The effect of an inhibitory composition based on an amphiphilic polymer of polyacrylate and stearic acid on the composition of paraffinic hydrocarbons in asphalt-resin-paraffin deposits (ARPD) of high-paraffin oil was studied. It is shown that with the addition of an amphiphilic polymer and a composition to oil, differences are observed in the nature of their molecular mass distribution of paraffinic hydrocarbons of the surfactants. The action of the polymer leads to a decrease in the content of hydrocarbons of the composition C16–C21 and an increase in the proportion of high-molecular hydrocarbons C22–C34. The use of stearic acid as a surfactant in the composition, on the contrary, reduces the amount of high molecular weight paraffin hydrocarbons.

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About the authors

I. V. Prozorova

Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: piv@ipc.tsc.ru
Russian Federation, Tomsk

N. V. Yudina

Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences

Email: natal@ipc.tsc.ru
Russian Federation, Tomsk

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2. Fig. 1. Molecular weight distribution of n-alkanes in oil fractions of ARPD at addition of polymer and stearic acid: (a) - oil, (b) - ARPD, (c) - ARPD of oil + P, (d) - ARPD of oil + С18Н36О2, (e) - ARPD of oil + С18Н36О2 + P

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3. Fig. 2. Microphotographs of oil fractions of the studied samples: (a) - ARPD of source oil, (b) - ARPD of oil + P, (c) - ARPD of oil + С18Н36О2, (d) - ARPD of oil + С18Н36О2+P

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