March 28, 2024
Shahriar Osfouri

Shahriar Osfouri

Academic Rank: Professor
Address:
Degree: Ph.D in Chemical Engineering
Phone: 88019360
Faculty: Faculty of Petroleum, Gas and Petrochemical Engineering

Research

Title Experimental Investigation of Rheological Behavior and Wax Deposition of Waxy Oil–Disulde Oil Systems
Type Article
Keywords
Journal Natural Resources Research
DOI
Researchers Reza Azin (Second researcher) , Shahriar Osfouri (Third researcher) , Amir Abbas Izadpanah (Fourth researcher) ,

Abstract

In this work, we studied the feasibility of using disulfide oil (DSO) as a solvent for wax prevention in pipelines. Several tests were carried out to determine the effects of DSO, ethylene-vinyl acetate (EVA), acetone, and p-xylene and their mixtures on wax appearance temperature (WAT), deposition mass, and rheological properties of oil samples. The WAT was determined from viscosity in the temperature range of 2–40 °C with 1 °C min?1 cooling rate. Viscoelastic modulus of different samples was measured at temperature intervals of 25–65 °C with 0.5 °C min?1 cooling rate. Results indicated that DSO has a good potential for reducing WAT and wax deposition mass; however, increasing DSO concentration to higher than 800 ppm did not show a significant effect on deposition reduction. It was found that a mixture of inhibitors had higher impact on reducing wax deposition. Using 800 ppm of EVA–DSO–acetone mixture resulted in deposition mass reduction to about 35.74%. It was found that the strong original gel network was considerably weakened by addition of DSO.