Theft prevention method and apparatus for wellheads
US4366970A · kind A · utility
7Cited by
9References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 15, 1980 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | Aug 15, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L2201/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A flange juncture of a wellhead is protected by first and second stainless steel clam shell closure members of substantially identical construction which are positioned over the flange juncture and welded by stainless steel welding procedures to preclude external access to the holding bolts of the flange juncture so as to prevent the unauthorized disconnection of the flange juncture and the theft of wellhead components attached thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.