Patent ID: 11946324
Assignee: PETRóBRAS BRASILEIRO S. A.—PETROBRAS
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 16:
17. A coupling method comprising:
inserting a top termination of a riser (TTR) into a support pipe in an upward movement;
contacting a spherical geometry of the TTR on the support pipe and creating a first torque resistant to entry;
starting contacting a conical surface of the TTR with the support pipe;
centering the TTR on the support pipe;
touching the TTR in slips and pushing them upwards together with a slip/fork and axle assembly;
finishing the upward movement of the slip/fork axle assembly and descending the same by gravity after contact with the TTR ends;
finishing a downward movement of the slip/fork/axle assembly; and
lowering the TTR completely and rest it on the slips.