Stress distributing wellhead connector
US8016042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2009 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Sep 30, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/038
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In accordance with certain embodiments, the present invention provides a connector for attaching to a multi-toothed profile on a wellhead features a tooth profile that staggers loading preferably starting at a loading surface furthest from the connector body sitting on the wellhead and moving toward the connector body. The staggered loading more evenly distributes stresses on the matching loading surfaces as compared to the result of using a tooth profile on the connector that nearly exactly matches the profile on the wellhead. The joint can then take advantage of an increased preload and exhibit improved stress characteristics when operating at high loading conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.