Expansion hanger

The one-piece structure of the expansion hanger can effectively improve the overall strength of the hanger 
and solve the problem of annular leakage of the large casing and the small casing over the side drilling window.

Features
1. Have a good seal hanging function, completely solve the side of the drilling window and casing over the 
large section of the overlap section of the annular leakage problem.
2. Has a good seal and two-way suspension performance, naked eye tail tube and the large casing to form a 
complete whole.
3. After the hanging hanger expansion seal is completed, the open hole section and the casing completely 
isolated, the open hole section to form a confined space, cement slurry coagulation expansion hanger above 
the liquid column pressure can not be applied to the formation, to minimize cement Contamination caused by slurry on the formation.
4. Eliminate the damage caused by the conventional hanger slips on the upper casing to provide greater 
suspension force, with higher reliability.
5 large diameter, increase the specifications of the suspension tail pipe.
6. Expansion hanger with integrated structure, which can effectively improve the overall strength of the 
hanger, to ensure smooth operation of the pipe.