The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2025
Filed:
Nov. 22, 2022
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Universidade Federal DO Espírito Santo—ufes, Vitória, BR;
Luiz Octavio Vieira Pereira, Rio de Janeiro, BR;
Renan Costa Lazaro, Vitória, BR;
Anselmo Frizera Neto, Vitória, BR;
Katiuski Pereira Nascimento, Vitória, BR;
Arnaldo Gomes Leal Junior, Vitória, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Universidade Federal Do Espírito Santo—UFES, Vitória, BR;
Abstract
The present invention proposes a system for measuring the water-oil interface level based on the fluid thermal properties. To overcome limitations related to the interface level in oil separation processes, an interface level sensor must detect water, oil, emulsion and foam layers. Furthermore, maintenance costs must be low and the time between maintenance must be high, in order to obtain high production rates and more reliable control of the oil separators. Optical system for measuring the water-oil interface level from fluid thermal properties comprises single-mode optical fiber (), FBG (), PTFE tube (), connection (), flange (), optical connectors () and optical interrogator ().