Oilfield Glossary
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Oilfield Glossary

wellhead
1.  n.  [Drilling] ID: 1661

The system of spools, valves and assorted adapters that provide pressure control of a production well.

See: casing string, casinghead, day rate, Texas deck
2.  n.  [Well Completions] ID: 2892

The surface termination of a wellbore that incorporates facilities for installing casing hangers during the well construction phase. The wellhead also incorporates a means of hanging the production tubing and installing the Christmas tree and surface flow-control facilities in preparation for the production phase of the well.

See: casing hanger

Wellhead components
(Click to enlarge)


Wellhead components