Wells – Submerged well – Wellhead
Reexamination Certificate
2005-10-11
2005-10-11
Lee, Jong-Suk (James) (Department: 3673)
Wells
Submerged well
Wellhead
C175S022000, C114S295000
Reexamination Certificate
active
06953092
ABSTRACT:
An apparatus and method for pre-installation of a petroleum wellhead on the seabed. The apparatus includes two principal components: a wellhead (1) and a ballast tube (9). The wellhead includes a tube in which are fixed guide fins (3) and structural fins (8). The ballast tube (9) includes a tube with a holding member (12) for its recovery after the wellhead (1) has been fixed on the seabed. The ballast tube (9) is placed inside the wellhead (1) and the assembly is launched towards the seabed, being embedded in it by the inherent weight of the assembly. After the wellhead (1) has been fixed, the ballast tube (9) is raised to the surface.
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Lee Jong-Suk (James)
Nixon & Vanderhye PC
Petroleo Brasileiro S.A. - PETROBRAS
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