Test and acceptance requirements for thermal recovery wellhead equipment

The gas tightness inspection of the main Christmas tree in the thermal production wellhead equipment should be carried out, and there should be no visible continuous bubbles in the casing head, tubing head, and Christmas tree body during the pressure maintaining period. The test pressure of this testing machine is 0-140Mpa, and the test pressure is optional. It is controlled by a computer, and all test settings and operations of the pressure testing pump can be completed on the automatic control console.
1. Identify the pipeline and affix labels;
2. Identify manual valves, filters, regulating valves, pressure gauges, and other components, and hang tags;
3. Set up schematic signs and equipment nameplates. The schematic diagram is made of aluminum anodized labels, and the equipment nameplate is made of stainless steel plate.
1) Test and acceptance requirements for thermal recovery wellhead equipment
1. Pressure body explosion test
Test method: pressurize the installed pressure chamber, close each port, and reach the burst test pressure: when the rated working pressure is ≤ 34.5MPa, take ≥ 5 times the rated pressure; When the rated working pressure is>≥ 69.0MPa, take ≥ 4 times the rated pressure.
Acceptance requirements: The pressure bearing body is not damaged and qualified
2. Pressure body strength test
Pressurize the body cavity of the installed pressure bearing body, close each port, open and close parts, tighten the packing cover, stabilize the pressure for 5 minutes after reaching twice the rated pressure, and conduct two tests
Acceptance requirements: During the voltage stabilization period, there is no leakage in the pressure bearing parts, and the sweating and pressure reduction are qualified
2) Sealing performance test
The test pressure is the rated pressure of the device. After reaching the test pressure, stabilize the pressure for 5 minutes and conduct two tests
Acceptance requirements: During the voltage stabilization period, there shall be no leakage of the pressure bearing parts, and the phenomenon of sweating and pressure reduction shall be considered as a combination
3) Valve sealing test
Close each end of the gate valve, open the atmosphere at the other end, and stabilize the pressure for 5 minutes after reaching the rated pressure
Acceptance requirements: During the voltage stabilization period, there is no leakage on the sealing surface of the outlet end, and it is qualified
For valves with an upper seal, an upper seal test should be conducted. Fully open the switch, loosen the packing cover, pressurize the assembled gate valve body cavity, close both ends of the valve, and stabilize the pressure for 5 minutes after reaching the rated pressure
Acceptance requirements: The gland is considered closed if there is no leakage during the pressure stabilization period.