Floating platform well production apparatus
US4228857A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1978 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Dec 11, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A plurality of wells are clustered around a central riser which is maintained under tension from a floating platform. A plurality of spiders on the riser carry funnels in vertical alignment with the wells. The funnels are sufficiently large to permit the passage of wellhead connectors and master block valves, and the production risers include centralizers which brace the production riser from the funnels through a limited vertical range. Tensioning of the production riser is with a lower force and through a limited range which precludes disengagement of the centralizers from the funnel. Some centralizers are located to facilitate entry and attachment to the wellhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.