Petroleo Brasileiro S.a. - Petrobras

Universidade Tiradentes&#x2014;unit

Cláudio Dariva

Jailton Ferreira Do Nascimento

Bruno Barbosa Castro

Montserrat Fortuny Heredia

Alexandre Ferreira Santos

Regina Celia Lourenco Guimarães

Bianca Machado Da Silva Ferreira

Maria De Fatima Pereira Dos Santos

Ricardo Andre Guarnieri

Rita De Cássia Bomfim Lemos

Lisiane Dos Santos Freitas

Fabiane Santos Serpa

Gabriela Menezes Silva

Eloisa Borges E Borges

Elton Franceschi

Elvio Barreto De Melo Filho

Gustavo Rodrigues Borges

Systems and methods of the present disclosure relate to a method for online monitoring, without the need for sampling and in real time, the precipitation of inorganic salts in aqueous streams related to the petroleum industry. A set of collected NIR spectra is correlated with data provided by FBRM through a mathematical (chemometric) treatment and mathematical models based on artificial neural networks combined with principal component analysis were employed to estimate the quantity and size distribution of particles precipitated over time. The application of these process analyzers helps to understand the formation and growth of inorganic salt particles from the produced water (rich in carbonates and sulfates), which can precipitate at different stages in oil production and transportation facilities.

Method for monitoring the precipitation of inorganic salts in aqueous systems

A process for the treatment of water/oil (W/O) emulsions is described which includes the addition of an ionic liquid, under heating, to a water/oil emulsion containing between 0.5% and 85% of water per volume as a dispersion phase, until the concentration of the ionic liquid in the emulsion remains within the range of 0.01 &#x3bc;L/g to 100 &#x3bc;L/g. The ionic liquid used is a salt of a general CAformula in a liquid state at temperatures below 150&#xb0; C., where Ais an anion and Cis a cation, which has at least a hydrophobic alkyl chain connected to a cation group. The heating method includes conventional heating and heating via microwaves. In the heating via microwaves, the salts of the general CAformula present synergic behavior in separation efficiency in relation to conventional heating.

Process for treatment of water/oil emulsions

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Aracaju, Brazil

Cláudio Dariva