Wellhead Assembly and Christmas Tree

• Cable wellhead and christmas tree

Wellhead equipment and Christmas tree equipment are mainly used to monitor the pressure of production wellhead, regulate the flow of oil (gas) wells, control volatile and toxic liquids and gases to be released to the ground and water during drilling and oil and gas production, and can also be used for acidizing, fracturing, water injection, testing and other measures.

The wellhead devices designed and produced meet the requirements of API 6A version 21 and NACE MR0175 standards, ensuring the safe and reliable use of wellhead devices and Christmas trees. It is applicable to electric submersible pump cables of various specifications and can realize reliable insulation and sealing; It is equipped with cable penetrator and downhole safety valve control pipeline.

• Multi seat wellhead and christmas tree

Multi seat quick installation wellhead device. The upper and lower casing heads are installed as an independent structure, which effectively saves installation time and labor costs. The installation, suspension and sealing of casing and tubing can be realized without frequent removal and installation of BOP. The straight hole design with 45 ° shoulder is adopted to reduce the body load.

• Integral wellhead device and christmas tree

The integrated horizontal oil production wellhead device is used for oil production on offshore platforms. There are upper chamber, middle chamber and lower chamber in the wellhead body. The lower ends of the upper cavity and the middle cavity are respectively provided with a conical shoulder. There is a tubing hanger in the upper chamber. The lower end of the tubing hanger is provided with a connecting thread for connecting the tubing. The tubing hanger has an oil outlet. A pneumatic and hydraulic safety valve and a throttle valve are fixed on the outer wall of the wellhead body. The reducing flange, wax removal valve and Christmas tree cap are at the upper end of the wellhead body. A completion casing hanger and an intermediate casing hanger are arranged in the middle cavity of the wellhead body. WD casing hanger is installed in the lower cavity of the wellhead body.

• Double pipe wellhead device

Double pipe production wellhead device is an important device for heavy oil recovery, which is mainly composed of tubing head, casing head, Christmas tree and gate valve. The big four-way and double pipe structures are the main components of the Christmas tree and the main pressure bearing components of the whole plant.

• Fracturetree

Fracturing tree is an important part of fracturing equipment, mainly composed of multiple fracturing gate valves and fracturing heads. Main function: input from multiple fracturing manifolds into the fracturing head, enter the fracturing gate valve, enter the bottom hole to conduct fracturing operation on the rock stratum, and control the fracturing operation through the fracturing gate valve switch. The diameter of our fracturing tree can reach 7-1/16 “and the pressure can reach 20000 psi.

• Ground rotation test tree

The surface rotary test tree (flow control head) is the main equipment for controlling oil and gas wells and running cables;

Equipment such as blowout preventer and blowout preventer connected with cable and steel wire at the upper part;

The lower part is connected with drill pipe or oil pipe;

The flow head is usually equipped with a rotary nipple to rotate the lower string, such as setting the packer;

Hang the lifting nipple with the lifting ring of the drilling crew to hang the control head;

There are four gate valves arranged in a cross shape;

The main valve is a manual valve at the lower part, which is used to isolate the oil well and the surface flow;

The suction valve is a manual valve at the upper part, which is used to run the cable tools into the wellbore;

The flow wing valve is a hydraulic fault free normally closed valve, which is pressurized and opened through the control panel, and can be quickly shut in in case of emergency;

The kill wing valve is a manual valve, which is connected to the pump truck through a single flow valve during testing, and is used to kill the well in emergency;