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Wellhead Equipment
The casing head is one of the core components of the wellhead equipment in drilling, mainly used to secure the wellhead structure and perform multiple functions. As a key hub connecting the downhole casing string with surface equipment, it not only supports the weight of all casing strings except the surface casing but also seals the annular space of the casing to prevent pressure cross-flow, ensuring well control safety. During the drilling phase, the casing head provides the installation base for the blowout preventer, and during the oil production period, it transitions to connect the tubing head and Christmas tree. Additionally, its side outlet function supports cement squeeze, pressure balancing, and emergency fluid injection, significantly enhancing cementing quality and operational flexibility.
The casing head is an important connector between the casing and the wellhead device. It is used for connections between casing strings, between the casing and the blowout preventer, and for support and connection between the wellhead and the oil (gas) well after completion. Its lower end is connected to the surface casing by threads, and the upper end is connected to the wellhead device or blowout preventer by flange or clamp. It supports the weight of subsequent casing strings through the hanger, bears the weight of the blowout preventer, forms a pressure seal between the inner and outer casings, provides an outlet for releasing pressure between casing strings, and allows for special operations related to drilling and production processes.
Custom Message
Our company supports customized production for customers, supports drawings/requirement communication, and welcomes research institutes, enterprises, institutions, and universities to contact us for cooperation and exchange, jointly develop new projects and new products, and conduct joint testing.