A coat hanger is a component of a wellhead that supports and protects the casing used to extract natural gas or oil. Standardized sizing is used, but custom versions can be expensive. Casing hooks must support considerable weight and pressure. They can seal automatically or manually and are carefully checked before installation. Regular maintenance is required to ensure proper functioning and prevent catastrophic failures.
A coat hanger is a component of a wellhead that sits atop a deposit of natural gas or oil. It supports and supports the casing used to protect the formations around the well as technicians drill and prepare to extract resources. Standardized sizing is used in industry for casing and accompanying hooks, which are available in different designs from manufacturers. For specific projects, custom versions may be available, although a custom carcass hook can be expensive due to the need for specially machined components and similar features.
The fixture is located in the wellhead, below the production pipe and above the casing itself. As the technicians drill, they lower the casing into the well to seal it and lock it in place with a casing hook, dropping a smaller drill through the casing to reach shallower depths as needed. Casing hooks must be able to support considerable weights not only of the pipe itself, but also of the loads it can carry. They are designed to handle extreme weight and pressure without fail.
Depending on the design, a casing hook can seal automatically or manually as it grips the casing and interlocks with other wellhead components. Technicians select the appropriate size given the specifications of the existing components and the casing they intend to use, carefully checking all parts to ensure they are installed correctly before moving on to the next section of the well. This process includes documentation for safety reasons so people can demonstrate the measures taken to protect the wellhead.
Casing hooks and other wellhead components can be sealed within conduit tubing and wrapping to reduce the risk of problems. It can be accessed via hatch points, and continuous monitoring of conditions within the wellhead is available with remote sensors to provide feedback on pressure, temperature and other characteristics. Technicians can monitor them both internally and at a remote location, so companies can constantly be aware of the situations in their wells around the world.
Equipment like a clothes hanger can last 20 years or more if properly maintained. Casing hooks should be regularly inspected along with other components for signs of strain such as cracks and fatigue. Wells also require regular cleanings and overhauls to confirm that all of their systems are in working order. This maintenance ensures that problems are caught early, providing the opportunity to shut down production and replace worn well parts before they fail catastrophically.
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