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A wellhead and Christmas tree assembly controls fluid production from an oil or gas well. The wellhead supports casing strings and seals pressure at the surface, while the Christmas tree houses valves and chokes to regulate flow, manage pressures, and provide safe intervention access during production.
Main Wellhead Components
Casing Head: Anchors and seals the first surface casing string.
Casing Spool: Holds intermediate and production casing hangers.
Tubing Head: Sits on top of the casing spool and suspends the production tubing.
Main Christmas Tree Components
Master Valve: Provides primary shut-off control for the entire well.
Flow Control Wing Valve: Regulates the flow of oil or gas into the production line.
Choke Valve: Controls the production rate and pressure drop.
Swab Valve: Allows tool access for wireline or coiled tubing operations.
Supply and Maintenance Practices
Pressure Testing: Verifies seal integrity during installation and routine checks.
Valve Greasing: Prevents internal corrosion and ensures smooth valve movement.
Function Testing: Confirms that emergency shut-down (ESD) and manual valves operate correctly.
OEM Procurement: Sources certified replacement parts matching strict API specifications.
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