What is a Christmas tree made of?

What is a Christmas tree made of?

Oil (gas) tree refers to the main part above the main gate of wellhead device. It looks like a tree, so it is called oil (gas) tree. Its function is to control and regulate the production of oil wells, guide the oil and gas ejected from the well into the oil pipeline, and realize the lifting and lowering of tools and equipment in the well.

(1) Composition of Christmas tree

① The main gate is used to control the oil and gas flow into the Christmas tree.

② Production gate, control oil and gas flow to the oil pipeline.

③ Wax removal gate, above which can be connected with paraffin remover, etc.

④ The choke is used to control the production of the flowing well.

⑤ Small cross connecting parts.

Christmas tree of wellhead equipment

(2) Classification of Christmas tree

Christmas tree of flowing well, electric submersible pump well, gas lift well, screw pump well, water injection well and gas well

(3) Accessories of Christmas tree - nozzle

Installed in the throttling device, its function is to control and regulate the production of oil wells.

The commonly used nozzles are nut type, snap type and adjustable type.

The relationship between the size of the nozzle and the bottom hole back pressure, production pressure difference and production is called the working system of flowing well.

(4) Throttle valve

Throttle valve can be divided into adjustable throttle valve and fixed throttle valve according to internal structure and use mode.

The adjustable throttle valve uses the regulating hand wheel to make the valve rod drive the valve needle to move up and down, so as to change the gap between the valve needle and the valve seat, so as to control the flow of oil, natural gas, mud and other flowing media in the channel.

The fixed throttle valve controls the flow of oil, natural gas, mud and other mobile media in the channel by changing the size of the internal channel of the valve.