What is the role of the Christmas tree?
It has the following main functions:
(1) The suspended tubing supports the weight of all tubing strings in the well.
(2) Seal the annular space between the tubing and casing.
(3) Control and regulate the production of oil wells.
(4) Ensure various underground operations.
(5) Daily production management such as admission of oil pressure, casing pressure data, pressure measurement, and wax removal can be carried out.