Method of making a blast joint
US4028796A · kind A · utility
24Cited by
10References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jun 23, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Jun 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49879
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present application discloses and claims the method of producing a blast joint for oil well production tubing. The method disclosed and claimed herein relates to assembling, upon the exterior of a length of production tubing, a stack of short length refractory rings resistant to abrasion and capable of enduring high temperature, to be used in a string of oil well production tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.