Method of joining metal oilfield tubulars and well provided therewith
US6860420B2 · kind B2 · utility
9Cited by
14References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L13/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of interconnecting a pair of metal oilfield tubulars having complementary tapered edges with a common contact surface when the tubulars are interconnected, is provided. The method consist of having a melting temperature lower than the melting temperature of the tubulars, interconnecting the tubulars whereby the think layer of metal is in between the tubulars, applying heat to the thin layer of metal so as to melt the thin layer of metal, and cooling the tapered edges whereby a metallurgical bond is created between the tubulars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.