1. support partial or weight fo caing on eache layer except for the surface casing with hanger.
2. Connect BOP and other components;
3.Isolate the annular space between inside casing and outside casing.
4.Provide outlet to release the pressure probably accumulated between the two casing strings.
5.In case of emergency, fluid. such as kill fluid and fire extinguishing agent, can be pumped into well form the side hole of caing head.
6. Special operation: A: if cementing quality is low, cement can be injected from side hole;
B when acide fracturing is conducted, pressure balanced liquid can be injected from side hole.
1. Product Description: The casing head, a component connecting the casing to the wellhead assembly of various types and sizes, is used to support the both the intermediate (protective) string and the production string, and to seal up the annular space between the casings, thus ...
1. Product Description: Tubing head is a spool with flange top, flanged bottom and two side outlets. It also can be called tubing spool. Top flange is equipped with lock screws to fix tubing hanger. Tubing head is installed on top of casing head, which consists of body housing ...