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. 16, 2025
Filed:
May. 09, 2025
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Universidade Federal DO Rio Grande DO Sul—ufrgs, Porto Alegre, BR;
Fabio Cesar Diehl, Rio de Janeiro, BR;
Jorge Otávio Trierweiler, Porto Alegre, BR;
Marcelo Farenzena, Porto Alegre, BR;
PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Rio de Janeiro, BR;
UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL—UFRGS, Porto Alegre, BR;
Abstract
The present invention refers to a virtual decoupling method for managing multiphase streams in subsea oil production modules, which comprises: obtaining, by means of flow rate transducers, the measurement of the flow rate in the valves V1, V2, V3 and V4; obtaining, by means of gas-liquid ratio transducers (GLRT), the measurement of the gas-liquid ratio of the multiphase streams at the outlets of the subsea oil production module (GLR1, GLR2); obtaining, by means of the pressure transducer PT01 and the level transducer LT01, the measurement of pressure and level in the separator vessel; obtaining, by means of the flow rate transducers FT02 and FT03, the measurement of the flow rate of the gas streams; obtaining, by means of the flow rate transducers FT01 and FT04, the measurement of the flow rate of the liquid streams; calculating the total liquid flow rate (TLF) and the total gas flow rate (TGF); adjusting the GLR values for subsea processing conditions (GLRS); and defining the setpoint of the flow rate controllers of the streams leaving the separator vessel (FIC1SP, FIC2SP, FIC3SP and FIC4SP).