Barros Neto, Eduardo Lins deNeves, Ricardo José Lins2019-10-042019-10-042019-08-09NEVES, Ricardo José Lins. Estudo da viscosidade de emulsões água-em-óleo contaminadas com aditivos de fluidos de perfuração. 2019. 76f. Dissertação (Mestrado em Engenharia Química) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2019.https://repositorio.ufrn.br/jspui/handle/123456789/27785The oil and natural gas industry has several steps that converge towards a common goal, which is to produce derivatives of commercial interest to support its economic viability. Two of the early stages of this industry are crucial to its viability: Well Drilling and Primary Oil Processing. The first is essential for the production of oil and natural gas, since not having producing wells it is impossible to drain the hydrocarbons from the reservoirs to the surface. The second is responsible for the specification of petroleum for transportation from the producing area to the refineries, where it is transformed into derivatives of commercial interest. This work carried out a study of the viscosity of water-in-oil emulsions and the interference that the components normally used in the drilling fluids formulated for the oil and natural gas fields in the state of Rio Grande do Norte provoke in this property when discarded into production pipelines. In addition, a mathematical modeling was carried out to allow the evaluation of the interference of the contaminants of drilling fluids in the treatment capacity of an Oil Treatment Station (OTS). From the viscosity curves the equations describing the viscosity of the emulsions as a function of temperature for the BSW (basic sediments and water) range analyzed were obtained. The viscosities of the emulsions were compared to those of the contaminated emulsions with the selected components of drilling fluids, allowing quantification of the increase in viscosity caused by such contaminants and to verify that baritine and carboxymethylcellulose (CMC) displaced the breakthrough of the emulsions to values of BSW less than 40%. The mathematical modeling performed to describe the treatment capacity of a Warmed Treatment Tank (WTT) made it possible to understand the interferences that the contaminants of the water-in-oil emulsions caused in their treatment capacity. It was verified that, for the operating conditions considered, xanthan gum did not decrease the treatment capacity of a WTT, but baritine and CMC implied a reduction up to 10% in treatment capacity and hydroxypropyl starch (HPS) reached a decrease up to 12%. The information obtained in this study reached its main objective, which was to scientifically prove the interference of the drilling fluid contaminants in the oil treatment capacity, indicating the need for investments in the drilling fluids disposal phase.Acesso AbertoPetróleoEmulsão água-óleoFluido de perfuraçãoViscosidadeBSWmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA QUIMICA