US 11,940,352 B2
System and method for detecting watertightness in the annular space of flexible lines
Paulo Roberto Santos Poli, Rio de Janeiro (BR); Joao Marcio De Castilho Santos, Rio de Janeiro (BR); Gustavo Pinto Pires, Rio de Janeiro (BR); Cassio Kuchpil, Rio de Janeiro (BR); and Carlos Eduardo Maia De Souza, Rio de Janeiro (BR)
Assigned to Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro (BR)
Appl. No. 17/298,482
Filed by PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Rio de Janeiro (BR)
PCT Filed Dec. 2, 2019, PCT No. PCT/BR2019/050513
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/113296, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 1020180750291 (BR), filed on Dec. 3, 2018.
Prior Publication US 2022/0034747 A1, Feb. 3, 2022
Int. Cl. G01M 3/28 (2006.01); E21B 47/06 (2012.01); E21B 47/117 (2012.01)
CPC G01M 3/2815 (2013.01) [E21B 47/06 (2013.01); E21B 47/117 (2020.05)] 11 Claims
OG exemplary drawing
 
1. A system for detecting water tightness of an annulus in a flexible line from a connector, the system comprising:
a device containing a plunger and a cylinder, a sealing system, a pressure gauge and a rod, the rod being connected to a chamber for controlled piston-cylinder-type actuation, a face of the cylinder being open and configured to be fitted into a safety valve of the connector of the flexible line;
a remotely operated underwater vehicle (ROV) including an arm that moves a handle;
a control chamber; and
a coupling and anchoring system.