Integral wellhead assembly for pumping wells
US5743332A · kind A · utility
20Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1996 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Feb 16, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The adapter, blow-out preventer housing and flow tee of an oilwell wellhead assembly are formed together as a one-piece or integral structure. The structure has a bottom flanged connection and a top studded and internally threaded connection. By eliminating threaded connections and the adapter body, the length of the combined assembly is reduced by about 50% and structural strength is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.