A Grease Injection Control Head, also known as a control head is the primary well control barrier, providing a seal around a moving wireline, which allows for intervention access to wells under pressure. Positioned at the uppermost point of the pressure control equipment string, the control head comprises two major sub-assemblies—the combination stuffing box and line wiper, and the flow tube assembly. The Control Head is crucial for maintaining a clean working environment for operations and personnel around the wellhead and is used in various pressure control equipment.
