Tubing hanger

Tubing hanger

The tubing hanger is a device that supports the tubing string and seals the annular space between the tubing and the casing. The sealing method of the tubing hanger is that the tubing hanger is connected to the tubing by using the gravity of the tubing to sit inside the four way cone of the tubing hanger, making it easy to operate, fast and safe to replace the wellhead. Therefore, it is a commonly used method in medium deep wells and conventional wells.
The tubing hanger is located inside the tubing head.
1. Tubing head structure
The tubing head is usually a large cross with flanges at both ends, installed on the upper flange of the casing head to suspend the tubing string and seal the annular space between the tubing string and the oil reservoir casing. It consists of a tubing head and tubing hanger.
2. The function of the tubing head
1) Suspend the tubing string in the well;
2) Sealing the annular space of oil pipes and casings;
3) Provide a transition for connecting the casing head down and the Christmas tree up;
4) Complete casing injection and well flushing operations through the two side ports on the tubing head cross body