| 摘要 |
<p>An underwater wellhead 1 is equipped with a shaft body 3 on which a tube support 5 is directly seated and housed. The tube support has lateral supports 10 aligned with orifices 11 of the shaft body, and control valves 14, 15 are mounted directly on the shaft body. The tube support also has a continuous vertical passage 9 with the same diameter as the tube 7, for providing on-line access, which is normally closed with a ring (crown) obturator 20. During normal operation, the fluid produced or injected passes via the orifices 11, hermetic closure of the upper and lower peripheral closures 8 in the tube support being facilitated. Above the tube support there is a primary obturator 16 of the shaft with electrical and hydraulic connectors in interface with the tube support. In the primary obturator 16 there is a supplementary working obturator 17 which provides access to the cables.</p> |
