1 the source of water for a well [syn: wellspring]
2 a structure built over a well
- For classical wellheads for water wells, see puteal.
The primary role of the wellhead is pressure containment & to hold the casings and the production tubing. Within the wellhead lies the tubing hanger, from which the production tubing hangs. The Christmas tree sits on top of the wellhead housing. Casing hangers serve to hold the different casings. Valves between these hangers then allow access to the different annuli for pressure control and particularly gas lift.
- Christmas tree
- Oil well
- American Petroleum Institute
- List of oilfield service companies
- Seaboard International (company promote)
wellhead in Portuguese: Boca de poço