公开(公告)号：US09983187B2

公开(公告)日：2018-05-29

申请号：US14861364

申请日：2015-09-22

Applicant: PETROLEO BRASILEIRO S.A.—PETROBRAS

Inventor： Flávio Cortiñas Albuquerque ,  Rafael dos Santos Nascimento de Brito ,  Marcele Abreu Lopes

IPC: G01N33/00 ,  G01N33/28 ,  C10G25/00

CPC classification number: G01N33/2835 ,  C10G25/00 ,  C10G2300/1037 ,  C10G2300/203 ,  C10G2300/80

Abstract: The present invention is a system for the extraction and quantification of tetraprotic naphthenic acids present in oils, precursors of the formation of calcium naphthenates, which are potential formers of deposits, causing of damage to pieces of equipment used in the oil production industry.