Rheological behavior of treated waxy crude oil under different climates using liquid copolymer pour point depressant

Document Type : Original Article

Authors

1 Chemistry, science,zagazig,siwa,Egypt

2 Petroleum Applications Department, Egyptian Petroleum Research Institute, Nasr City, Cairo (EGYPT)

3 Refining Department, Egyptian Petroleum Research Institute, Nasr City, Cairo (EGYPT)

4 Chemistry, Science, Zagazig, Kom-Elnour, Egypt

Abstract

Pour point depressants are chemical products employed in waxy crude oil treatment to prevent or decrease wax precipitation and enhance its rheological properties. Thus, we studied the pour point temperature and rheological characteristics of Egyptian waxy crude oils doped with three liquid pour point depressants: LPPD-1, LPPD-2, and LPPD-3. According to the findings, the crude oil samples treated with LPPDs notably improved their pour point temperature, yield value minimization, and rheological behavior. LPPD-3 presented the greatest results by employing a 2000 ppm treatment dose. It lowered the pour point temperature of waxy crude-A from 75 °F to 45 °F and the pour point temperature of waxy crude-B from 65 °F to 25 °F. Additionally, it considerably enhanced the rheological characteristics of crude-C by decreasing its apparent viscosity; at 70 °F, an untreated crude oil sample's 30 cP viscosity was attained, whereas at 32 °F, a 1000 ppm treated sample achieved the same viscosity. LPPD-3 also reduced the yield value of crude-D at 70 °F by 85% when treated with a dosage of 1000 ppm.

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Bulletin of Faculty of Science, Zagazig University
Volume 2025, Issue 4
October 2025
Pages 171-181

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