Tubing head
The tubing head is a device component that connects the top casing head and the oil (gas) tree to suspend the tubing and seal the annular space between the tubing and the casing. The tubing head is located above the casing head, including the casing spool and tubing hanger. Its function is to suspend the oil pipe, downhole tools, and seal the annular space of the oil sleeve that is lowered into the well.
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