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:
May. 03, 2022
Filed:
Sep. 10, 2019
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Roberto Rodrigues, Rio de Janeiro, BR;
Carlos Alberto Bandeira Ribeiro, Rio de Janeiro, BR;
Daniel Monteiro Pimentel, Rio de Janeiro, BR;
Everton Da Rocha Nascimento, Macae, BR;
Renato De Freitas Soares, Niterói, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Abstract
The present invention provides a nonresident system for depressurizing subsea apparatus and lines comprising a depressurizing tool () adapted for being coupled to an ROV interface () of a subsea apparatus, wherein the depressurizing tool () is coupled to an ROV (), wherein: the ROV interface () comprises a first pipeline () for connection to a first hydrocarbon transport line (), a second pipeline () for connection to second hydrocarbon transport line (), and a connection mandrel (); and the depressurizing tool () comprises a suction line () adapted for being connected to the first pipeline () for connection to the first hydrocarbon transport line; a discharge line () adapted for being connected to the second pipeline () for connection to the second hydrocarbon transport line; a pump (); and a connector () adapted for being connected to the connection mandrel () of the ROV interface (). A method is also provided for depressurizing subsea apparatus and lines, comprising the steps of: removing a blind cap () from an ROV interface () with aid of an ROV (); coupling a depressurizing tool () to the ROV interface () of a subsea apparatus (); suction and removal of fluid from a first hydrocarbon transport line, wherein the first hydrocarbon transport line comprises hydrate formation; and pressurizing and reinjecting the fluid into a second hydrocarbon transport line.