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How To Operate The Wellhead Christmas Tree?

2021-04-23 10:54:28
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How To Operate The Wellhead Christmas Tree? 

1. Opening a well (self-blowing well): 1. Ensure that the production system is complete and the flow is smooth to accept the fluid after the well is opened. 2. All the valves on the Christmas tree are in the correct switching state to control the nozzle (adjustable nozzle). 3. Check the wellhead oil pressure and the status of safety equipment.

2. Shut down the well (self-blowing well): 1. Shut off the oil nozzle. 2. Close the wing valve. 3. Turn off the ground safety valve when necessary. 4. Close the main valve when necessary.

3. During some downhole operations, the operating steps of the Christmas tree valve are as follows:

1. Shut down the well (oil nozzle, wing valve, wax removal valve, surface safety valve and main valve) before running downhole tools.

2. Open the Christmas tree cap, install the riser and blowout preventer, and then test the pressure of the riser.

3. Open the ground safety valve, and put a fuse screw cap on the safety valve to lock the ground safety valve. In the open position, test the reliability of the locking screw cap.

4. Lock the hydraulic control circuit of the downhole safety valve of the tubing and test its reliability.

5. Open the main valve, and then open the wax removal valve.

6. Put labels on the locked parts of the main valve, wax removal valve and safety valve to prevent other people from moving the valve at will.

7. Run downhole operation tools.

8. After the downhole operating tool mentions the riser, close the main valve and the wax removal valve.

9. After the blowout preventer riser is depressurized and unloaded, install the Christmas tree cap,

10. Remove the locking screw cap of the surface safety valve, open the hydraulic locking valve of the downhole safety valve of the tubing, and remove the label.

11. Open wells for production according to the instructions.

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