Christmas tree
US10240424B2 · kind B2 · utility
3Cited by
10References
19Claims
0Family size
Inventor
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Jun 24, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A Christmas tree and a method of completing a well in a standard wellhead. The tree is presented as separately deployable upper and lower portions with the master valves contained in the lower portion so that they are located below the wellhead housing to lower the height of the tree while increasing well safety and integrity. The upper master valve is bi-directionally sealing to allow for pressure testing, removing the requirement for tubing hanger plugs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.