How does the blade of the casing scraper stick out after running the well？

After the casing scraper run to the well, it will generally be extended through a certain mechanical structure. The specific operation process may have certain differences, but usually includes the following steps::

Preparation: Before running the well, check the blade condition of the scraper to ensure that there is no damage or wear, ensure the connection between the blade and the casing scraper is not loose or damaged.

Install the scraper: Connect the scraper to the downhole tools and secure it with a nut or other holding device. Ensure the wiper connection is secure to prevent loosening or rotation during running.

Operating extension mechanisms: Casing scrapers typically have mechanical extension mechanisms that are used to control the extension and withdrawal of the blade. The method of operation may vary depending on the type of scraper, but they usually work in one of the following ways:

a. Rotary: By rotating the upper part of the tool or through a connected plug, the blade will rotate clockwise or counterclockwise so that the blade sticks out from the bottom of the scraper.

b. Push-pull: The scraper blade is pushed out or pulled back from the bottom of the scraper by pushing and pulling down the upper part of the well tool or through a connected plug.

c. Hydraulic or pneumatic: Through the hydraulic or pneumatic system, control the expansion and expansion of the scraper blade. By controlling the valve, liquid or gas can be introduced to make the scraping blade extend or withdraw.

Blade extension: According to the design of the scraper, through the appropriate operation of the extension mechanism, perform the corresponding operation to make the blade extend to the desired position. Rotation, push and pull, or hydraulic/aerodynamic forces are usually used to achieve blade extension.

Scraping operation: Once the blade is extended in place, the scraping operation can be performed. The blade of the scraper removes sediment and scale attached to the lining of the casing to clean it and keep it open.

To ensure the safety and effectiveness of the operation, the operator should be familiar with the operating instructions of the scraper and operate in accordance with the relevant safe operating procedures. In addition, equipment and tools should be kept in good condition and any applicable safety standards and regulations should be observed prior to downhole operation.