Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
YIELD STRESS IN WAXY CRUDE OIL EMULSIONS
Submission Author:
Gabriel Gomes Vargas , SP
Co-Authors:
Gustavo Alonso Barrientos Sandoval, Rafhael M Andrade, Edson Soares, Roney Thompson, Flavio Barboza Campos
Presenter: Gabriel Gomes Vargas
doi://10.26678/ABCM.ENCIT2016.CIT2016-0673
Abstract
Waxy crude oil is a very complex non-Newtonian material, which exhibits time-dependence related to vis- coelasticity and thixotropy. In addition, such material is rather dependent to the temperature history, which turns the measurements of the rheological properties rather difficult. The waxy appears when the oil is subjected to low temperatures, which is typical in oil recovery off shore in deep waters. The flocks of waxy can agglomerate and block pipelines. In fact, such a phenomenon is one of the most dramatic problem in the petroleum industry. Up to now, many works were concerned about dry waxy crude oil, but a very few considered the problem of waxy crude oil emulsion gels and this is the focus of our work. By aid of a rotational rheometer, we conducted a great number of tests to obtain the flow curve, highlighting the static and dynamic yield-stress for a range of concentration of water. We also investigated the effect of the drop size and its distribution in the emulsion.
Keywords
Emulsion, Yield-stress, Waxy Cude Oil, Emulsion, Yield-stress, Waxy Cude Oil, Emulsion, Yield-stress, Waxy Cude Oil
