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Application of novel hydrophobically modified polybetaines based on alkylaminocrotonates and methacrylic acid as pour point depressants and ASP flooding agent

  • Sarkyt Kudaibergenov
  • Alexey Shakhvorostov
  • Iskander Gussenov
  • Tulegen Seilkhanov
  • Nurxat Nuraje
Original Paper
  • 5 Downloads

Abstract

A series of hydrophobically modified polymeric betaines (HMPB) were synthesized from alkylaminocrotonates and methacrylic acid, analyzed by methods of GPC, potentiometric titration and DSC and applied as pour point depressants (PPD) to high paraffinic crude oils of Western Kazakhstan. The efficiency of paraffin inhibition with the help of HMPB was evaluated in static and dynamic conditions. The physicochemical properties of the Mangyshlak oil and the Buzachi–Mangyshlak oil mixture (67:33 vol%) were determined. Paraffins were found to form gelled networks in the Mangyshlak oil and Buzachi–Mangyshlak oil mixture within the fractions of hydrocarbons with lengths of C12–C17 and C13–C16. The results of testing the HMPB as PPD in the model tank and oil pipeline showed that, at a concentration of polymeric additives of 500 ppm and at an injection temperature of 60 °C, the quantity of precipitated asphaltene–resin–paraffin depositions was significantly reduced. The efficiency of HMPB bearing C16H33 groups was tested as a prototype alkaline–surfactant–polymer flooding agent on the heavy oil of the Karazhanbas oilfield.

Keywords

Hydrophobic polybetaines Hydrophobicity Pour point depressant Oil recovery 

Notes

Acknowledgements

This work was supported by the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP05131003/2018-2020). N.N. acknowledges the ACSPRF (57095-DN17).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

289_2018_2626_MOESM1_ESM.docx (11 mb)
Supplementary material 1 (DOCX 11,262 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of Polymer Materials and TechnologyAlmatyKazakhstan
  2. 2.Laboratory of Engineering ProfileK.I. Satpayev Kazakh National Research Technical UniversityAlmatyKazakhstan
  3. 3.Sh. Ualikhanov, Kokshetau State UniversityKokshetauKazakhstan
  4. 4.Department of Chemical EngineeringTexas Tech UniversityLubbockUSA

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