Wellhead
A wellhead is the equipment installed at the surface of a wellbore to control and monitor the extraction of hydrocarbons from the subsurface. It typically consists of a casing head, tubing head, and a Christmas tree. The casing head provides a fixed mounting for the wellhead equipment and seals the annulus between the casing and the tubing. The tubing head provides a means of suspending and sealing the production tubing. The Christmas tree is a series of valves and fittings that control the flow of hydrocarbons from the well. The wellhead also includes pressure gauges, chokes, and other equipment necessary for safe and efficient production.
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