Subsea well head alignment system
US4721163A · kind A · utility
31Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1986 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Feb 27, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubing hanger alignment system for a subsea well, periodically subjected to treatment by removing the well tubing and inserting treating tools therein, wherein a tubing guidance system cooperating with the wellhead for engaging a downwardly moving tubing hanger running system thereby to rotate said tubing hanger sufficiently to position the carried tubing at a predetermined relationship with the wellhead, thereby providing access into the tubing hanger for sealing elements of an over-positioned subsea tree co-operative with the wellhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.