US 12,264,571 B2
Control and management system of multiphase streams in subsea oil and gas production modules
Fabio Cesar Diehl, Rio de Janeiro (BR); Marcelo Farenzena, Porto Alegre (BR); Fabio Alves Albuquerque, Rio de Janeiro (BR); and Jorge Otávio Trierweiler, Porto Alegre (BR)
Assigned to PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Rio de Janeiro (BR); and UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL—UFRGS, Porto Alegre (BR)
Filed by PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Rio de Janeiro (BR); and UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL—UFRGS, Porto Alegre (BR)
Filed on Nov. 22, 2023, as Appl. No. 18/517,922.
Prior Publication US 2024/0167373 A1, May 23, 2024
Int. Cl. E21B 43/01 (2006.01); E21B 43/36 (2006.01)
CPC E21B 43/36 (2013.01) [E21B 43/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control and management system of multiphase streams in subsea oil and gas production modules, the system comprising (i) a phase separator vessel; (ii) mixing lines; (iii) multiphase measuring instruments; (iv) flow rate, level, and pressure sensors; (v) a plurality of control valves; and (vi) cascade proportional-integral-derivative (PID) flow rate, level, and pressure controllers, wherein the multiphase measuring instruments indicate gas-liquid ratios that are configured to be used to command the flow rate controllers.