Reentry system for subsea well apparatus
US4095649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1977 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Jan 13, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A reentry system for a subsea apparatus or station including a normally retracted guide post, which is extendable above the well apparatus for connection to a single guide line. A frame structure lowered along the single guide line includes a gimbal mounted guide funnel assembly which provides self-adjustment of the funnel assembly during a non-axial approach into axial alignment with the guide post means. The guide posts means and funnel assembly are provided with orientation and positioning means for the frame structure so that well equipment carried by the frame structure is positioned in alignment with its cooperable part on the well apparatus. A retractable, extendable guide post which is non-rotatable and which is recoverable for maintenance and service. A method of making such a reentry to a subsea well apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.