Tubular component for drilling and operating hydrocarbon wells, and resulting threaded connection
US9822591B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Aug 2, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0423
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubular component for a threaded connection includes at one of its ends a threaded zone. The end includes a terminal surface and the threaded zone includes, over at least a portion, threads including, when viewed in a longitudinal section passing through an axis of the tubular component, a thread crest, a thread root, a load flank, and a stabbing flank, such that a respective axial width of thread crests decreases in a direction of the terminal surface while a respective axial width of thread roots increases when considered in the same direction. At least one of a profile of the load flank and a profile of the stabbing flank of a thread portion includes, as a contral portion, a continuous curve provided with a point of inflection such that the profile with the point of inflection in convex at the thread crest and concave close to the thread root.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.