The Structure of Drilling Swivel

Drilling swivel is one of the main equipment in oil and gas industry. The main technical parameters of the drilling swivel include: model, maximum load rating, working load, working pressure, center pipe diameter, etc.

The drilling swivel consists of bail, gooseneck, bracket, packing device, a shell, a central pipe, joints etc. the bail is connected with two lifting rings and shell. It let drilling swivel hang on the block. A main bearing in the shell can bears all the weight of the drill string. The upper and the lower parts of the housing are respectively provided with an anti-jump bearing and a bearing in the shell body. On the outside of shell is also provided with an anti-collision device, so as to avoid in the process of drilling casing impact rings.

The bracket is provided with a proof bearing and a two oil seal. There is a mud umbrella to prevent external debris and mud immersion in the upper bearing cover. One end of the gooseneck is connected with the packing device, the other end is connected by the joint and the drilling swivel. Central tube is a hollow parts, the upper is connected to the packing device, and the lower end of the connector and the middle bearing shoulder sitting on top of the main bearing.

It straightened relies on the bracket and a lower bearing cover bearing, or use bracket and the upper bearing cover to adjust pad number, and control center tube axial movement.

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