Well riser support having elastomeric bearings
US4199847A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1979 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | Jan 29, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/004
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well riser support for supporting and guiding an assembly of well riser pipe through a rotary table to facilitate coupling or uncoupling joints of riser pipe to the riser assembly. The support includes a spider assembly containing a plurality of hydraulically actuated dogs for supporting the riser and a plurality of resilient bearings supporting the spider assembly. Each bearing is configured to absorb and distribute loads applied parallel to and transversely of the riser axis, and comprises alternating layers of elastomeric and non-elastomeric materials with the compression axis of the bearing being inclined with respect to the riser axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.