Simple steel wire Simple Blowout Prevention System

I. Overview:

Simple steel wire surface blowout prevention system is a kind of surface blowout prevention device used to accommodate steel wire well testing tools and instruments for simple underground operation. Because of its simple assembly, light weight and quick operation, it is called simple blowout prevention system.

II. Main technical parameters:

1. working pressure: 35MPa；

2. Test pressure: 52MPa；

3. Wire diameter: 0.108 ";

4. Connection form with wellhead: 2-7/8tbg;

5. Diameter of pulley: 10 ";

6. Working environment: standard environment;

7. Body material: alloy steel (35CrMo).

III. Structural characteristics:

The simple steel wire ground blowout prevention system is mainly composed of wellhead sub, blowout preventer (or tubing), blowout preventer, crown block, ground block and pedal assembly.

The wellhead sub is used to connect the wellhead with the lubricator (or tubing). The lubricator (or tubing) is used to contain the tool string. The anti-spray nozzle is used to seal the pressure in the well, the steel wire is sealed by rubber packing, and it has its own oil cup to lubricate the steel wire with oil. The crown block is used to ensure that the winch wire enters the center of lubricator (or oil pipe) and change the pulling direction of the wire from upward to downward. It is fixed between the blowout preventer and the blowout preventer (or oil pipe), and can rotate around the blowout preventer (or oil pipe) to adjust the direction of the steel wire. The ground pulley is used to pull the steel wire from the top of lubricator to the winch drum and fix it at the wellhead with ropes.

IV.  matters needing attention:

1. Before using the tool, check the damage of seals everywhere and replace them in time.

2. Pay attention to the maintenance of pulleys and other equipment to prolong the service life of equipment.

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