A wellhead control panel (WHCP) is the main part of a safety system on a production platform or production location. The panels enable safe and reliable operation of the Xmas tree valves by providing hydraulic power and controls, and in some cases pneumatic controls.
The Xmas tree valves are in most cases on-off valves with a hydraulic or pneumatic actuator.
The following Xmas tree valves are typically controlled by a wellhead control panel:
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Sub-Surface Controlled Safety Valve (SSCSV)
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Master Valve (MV)
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Wing Valve (WV)
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Choke Valve
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Riser ESD Valve