01279nab a2200169 4500 20260520001747.0 260224s2009 xxu Effects of stress and oscillatory frequency on the structural properties of Daqing gelled crude oil at different temperatures abril. 2009 2009-05-11 ; 2009-05-11 4 p. ; 167-170 Resumen publicado por el autor: The structural properties of Daqing gelled waxy crude oil were studied with a controlled-stress rheometer under oscillatory shear mode. Our results demonstrate that the gelled waxy crude oil shows viscoelastic properties. The linear viscoelastic region and yielding of crude oil can be determined not only by the critical linear shear stress (tcl) and yield stress (ty), but also by the critical linear shear strain ( cl) and yield strain ( y) respectively. With the decrease of test temperature, tcl and ty increased greatly while cl and y decreased gradually. The crude oil showed more elastic at lower temperatures. The frequency had little effect on the structure of crude oils in the measured range. 3-4 Journal of Petroleum Science & Engineering 65 ARTICULO 169722 169722 0 0 0 0 237541 BAAB BAAB 2026-03-05 200044531 0 200044531 2026-03-05 15:11:57 2026-03-05 ARTICULO