Hydraulic Stuffing Box Wireline Pressure Control

I. Overview:
The hydraulic blowout preventer is a ground pressure control equipment for sealing steel wire in steel wire operation, and its sealing of steel wire is realized by rubber sealing packing. The blowout prevention system is equipped with a steel wire blowout prevention plug for sealing the downhole pressure after the steel wire breaks. The pressing mode of sealing packing is hydraulic remote control and manual operation. The blowout prevention box is mainly composed of pulley bracket assembly, body assembly and control hydraulic cylinder assembly.
II. Main technical parameters:
1. specification and model: FH16-35-Y
2. Rated working pressure: 35MPa；;
3. Maximum applicable steel wire diameter: 0.125 ";
4. Diameter of pulley: 16″(406.4mm)；);
5. Operation mode: manual and hydraulic integration;
6. Connection form: 4-3/4-4 ACME-B union; Safety load: 25KN.
III. Usage:
1. Install copper sleeve:
(1) install the copper sleeve (part 7) into the piston (part 4) and screw on the hexagon socket set screws with flat point (part 23);
(2) Install the O-ring of the piston;
(3) Install the O-ring of the hydraulic cylinder (part 6);
(4) Put the piston assembly into the hydraulic cylinder (part 6), put the spring (part 5), tighten it on the body (part 12), and screw on the hexagon socket set screws with flat point;
(5) Screw on the inner quick connector (piece 21) and the manual pressure cover (piece 3).
2. Thread the steel wire from the upper part of the BOP box: (1) the steel wire passes through the manual pressure cover (part 3), piston (part 4), copper sleeve (part 7), packing and sandwich packing (parts 8 and 9) and blowout prevention plug (part 11) from top to bottom in turn; (2) Screw on the BOP stopper (part 13).
3. Loosen the knurled nut (part 31), install the guard against the job-hopping plate (part 15), install the steel wire in the wheel groove, lower the anti-job-hopping plate, and tighten the knurled nut.
4. Install the blowout preventer on the blowout preventer and tighten the union nut (part 14).
IV. Precautions:
1. after adjusting the hydraulic cylinder (part 6) and adjusting the bearing clearance properly, pay attention to tighten the hexagon socket set screws with flat point;
2. Regularly add sealing grease to the deep groove ball bearing (part 35) on the pulley shaft (part 18);
3. The pulley bearing has its own grease, and it must be replaced immediately in case of jamming or abnormal sound;
4. It should be fixed firmly during storage or transportation to prevent bumping against pulleys.
V. Performance test:
1. Tie the steel wire at the stopper of blowout preventer after penetrating from the lower part;
2. Install the pressure test joint and connect the pressure test pipeline;
3. Connect the pipeline of the hand pump to the control cylinder, and first press it to 21MPa；; You can also tighten the packing sealing wire by hand;
4. Start the pressure test pump for pressure test, the test pressure is 70MPa, keep the pressure for 15 minutes, and fill in the test record card.
VI. Routine maintenance:
1. After each well use, the sealing packing and blowout preventer should be replaced;
2. If the bearing is jammed or abnormal, it must be checked and replaced;
3. When temporarily not in use, it should be stored with silk protector.

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