Metal MI heating cable installation and operation process
1. Site preparation:
The approval document for wellhead construction has been issued;
The construction site is level and closed. Idlers cannot enter and meet HSE standard requirements;
The power supply connection point is completed;
Enter the security system;
All equipment arrived at the scene;
2. Construction preparation
Inventory and inspection of equipment and tools;
After the hollow sucker rod is installed. Combine and release a complete set of construction equipment for heating cables at the site, and place and anchor the turret on the metal heating cable reel.
Set up temporary scaffolding or operation platform ladder for wellhead.
Put the φ20mm steel ball head and steel cable slowly into the hollow sucker rod until the bottom of the hollow sucker rod. Make a mark on the exposed steel cable to prepare for measuring the total actual depth.
Use force and speed to lift and lower the steel ball head and steel cable in the hollow sucker rod, guarantee 2~3 times for each section, clean the channel and polish the burrs in the pipe.
Check the actual depth of the steel cable, check with the actual length of the heating cable supplied, and then check the other parameters of the heating cable.
The installation and connection parts of the hollow sucker rod installation sub-parts are normal, and there is no obvious leakage. The working position of the Christmas tree is normal.
3. Construction and installation
Check all installation parts and sealing materials.
Comprehensive linkage inspection of all operating instruments.
The person in charge of the construction site of the owner issues an order to start the formal construction operation.
Release the metal heating cable to the wellhead through the wellhead pulley, and thread all other parts at the end of the metal heating cable according to the sequence in Figure 3.
Install the wellhead connector.
Install the special accessories “MI seal holder” (pay attention to add O-ring seal).
Put in the sealed semi-hard fluorine rubber ring and the sealing copper gasket, and first tighten the MI seal head, and feel that the metal heating cable can still move up and down.
Check the linkage of the metal heating cable into the fixture of the installation tool and the cable reel.
Slowly feed the metal MI heating cable into the hollow sucker rod.
When the metal heating cable enters the tubing for about 100m, an operator must be guarded by the cable reel to prevent and prevent the metal heating cable from being dragged into the well, and the damping cable will continue to enter slowly under the control of external force.
When the entering metal MI heating cable body obviously releases its weight, it indicates that the design depth defined in the hollow sucker rod has been reached.
Tighten the MI seal beam head, compression ring, and lock nut in place.
Disassemble other installation aids, and complete the installation of the metal MI heating cable wellhead fixing assembly.
The final wellhead hollow sucker rod installation solid seal is shown above:
Connect the sealed metal power socket, and lay the cold power cable buried in the steel pipe into the temperature control box to prepare for power input.
Check again and there is no abnormality, the installation process is complete, you can ask the oil field technician to connect the rope suspension and enter the power transmission debugging stage.