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Anti-rotation cementing plug manufacturers tell you the steps of cementing operations

Anti-rotation cementing plug manufacturers tell you the steps of cementing operations

(Summary description)In order to reinforce the well wall, ensure continuous and safe drilling, plug oil, gas and water layers, ensure the exploration and layering test and the rational production of oil and gas in the whole production process,

Anti-rotation cementing plug manufacturers tell you the steps of cementing operations

(Summary description)In order to reinforce the well wall, ensure continuous and safe drilling, plug oil, gas and water layers, ensure the exploration and layering test and the rational production of oil and gas in the whole production process,

Information

In order to reinforce the well wall, ensure continuous and safe drilling, plug oil, gas and water layers, ensure the exploration and layering test and the rational production of oil and gas in the whole production process, the operation of running high-quality steel pipes and filling the steel pipe annulus with high cement is called cementing engineering.

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cementing step

1. Lower case

Different from the drill pipe, the casing is a one-time-use pipe, not thickened, and the length is not strictly specified. In order to ensure the cementing quality and the smooth running of the casing, the structural design of the casing string should be done well. The casing strength is designed according to the application, the predicted formation pressure and the casing running depth are determined, and the casing wall thickness, steel grade and thread type are determined.

2. Cement

Cementing is a key process after the casing is run down the well. Its function is to seal the annular space between the casing and the well wall, seal the oil and gas water layer, and make the casing a channel for oil and gas to enter the well.

3. Wellhead installation and casing pressure test

After the casing is cemented, the wellhead is installed while the cement is set. The top of the surface casing should mate with the casing of the casing. The top of each layer of casing is hung in the casing head. The casing head is mainly used to support the weight of the technical casing and the oil layer casing, which is especially important when the cementing cement does not return to the surface. The casing head is also used to seal the annular space between the casings to prevent pressure channeling from each other. The casing head is also a transitional connection between the blowout preventer and the tubing head. The casing head used on land also has two side holes for replenishing cement and monitoring well conditions. Inject balance fluid, etc.
 

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