Threaded tubular connection
US11174686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2018 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Jun 29, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/002
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded tubular connection for drilling or operating hydrocarbon wells comprising a longitudinal axis, a metal pin member having a tapered two-step wedge pin thread with dovetail wedge threads and a pin sealing surface located between the small and large diameter pin thread steps, and a metal box member having a tapered two-step wedge box thread with dovetail wedge threads and a box sealing surface located between the small and large diameter box thread steps, wherein the tubular connection is free from any final make-up stop shoulder defining a final make-up position for the pin member relative to the box member, the small diameter wedge thread set and the large diameter wedge thread set are dimensioned to have a first axial clearance and a second axial clearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.