Combined Effect of Depressor Additive and Heat Treatment on the Rheological Properties of Highly Paraffinic Oils - Laura Boranbayeva; Galina Boiko; Alexander Didukh; Raushan Sarmurzina; Zhanserik Ilmaliyev; Nina Lubchenko; Assel Kozhamzharova; Serzhan Mombekov; Saki Raheem (ACS Omega)