Effect of modified oleic acid derivatives pour point depressants on flow properties of crude oil | ||
| Egyptian Journal of Chemistry | ||
| Articles in Press, Accepted Manuscript, Available Online from 02 October 2025 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2025.394911.12122 | ||
| Authors | ||
| Soliman Soliman* 1; Shymaa Samir2; Taha Eldebss3; Ahmed Abdo El-Sherif2; Muhamad Ramadan4 | ||
| 1Chemistry Department, Faculty of Science, Cairo University | ||
| 2Faculty of science, Cairo university | ||
| 3organic chemistry department, faculty of science , cairo university | ||
| 4Faculty of Science - Cairo University | ||
| Abstract | ||
| Wax deposition in crude oil pipelines is one of the most serious flow assurance challenges. Oleic acid-based copolymers were synthesized and evaluated as pour point depressants (PPDs) to mitigate this issue. Dimethyl maleate was grafted onto Decyl Oleate (DO-G-PDMM) and vinyl acetate onto oleic acid (OA-G-PVA). Structures were confirmed by FTIR and 1H NMR. At optimal dose (3000 ppm) of DO-G-PDMM reduced the pour point from 24 °C to 9 °C, while the blend with (2000 ppm) of OA-G-PVA further decreased it to 6 °C. Rheological measurements were performed at 20°C and 30°C and achieved remarkable enhancement in yield stress which decreased from 9.91 dyn/cm2 to 0.16 dyn/cm2 and from 0.651 dyn/cm2 to 0.0025 dyn/cm2 respectively; moreover achieved a good paraffin inhibition percentage of 66.43%.These results demonstrate the novel synergistic action of DO-G-PDMM and OA-G-PVA in a single formulation and highlight their potential as efficient, environmentally friendly flow improvers for waxy crude oil | ||
| Keywords | ||
| Oleic Acid; Dimethyl Maleate; Vinyl Acetate; Pour point depressant; Viscosity; Yield Stress; Waxy crude oil | ||
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