Tool Introduction:

Non rotating scraper is used to remove cement blocks, cement rings, hardened mud, paraffin, various salt crystals, and sediments on the inner walls of oil and gas field wellbores. It is also possible to remove burrs from perforations and iron oxide produced after casing corrosion. To ensure that the inner wall of the wellbore is clean, orderly, and unobstructed, facilitating the smooth insertion of downhole tools and improving the success rate of operations. It can also be combined with well drilling, plug drilling, and cleaning tools to achieve multi in one operation of completing multiple processes in one pipeline; When encountering complex underground situations, simply lift the pipe string and cut off the shear pin to achieve synchronous rotation between the scraper and the main body to achieve unblocking.

Structural features:

① Innovative structural design and reliable performance;

② Multiple forms of combinations can be arranged at any time according to the needs of the assignment;

③ There is a wear-resistant mechanism between the sleeve and scraper components and the body;

④ The scraper and the body are relatively free, meeting the function of drilling while drilling;

⑤ The scraper is arranged in a staggered and reverse direction to meet the requirements of casing cleaning operations;

⑥ Emergency cutting device assists in card release.

Operation:

The tool consists of components such as an upper joint, an upper straightening sleeve, a body, a scraper, a lower straightening sleeve, a shear sleeve, a shear ring, and a lower joint. Enter the well with the scraper open to complete the routine casing cleaning and scraping operation. It can also be combined with drilling plugs, well drilling, and flushing operation strings. When the scraping operation encounters resistance, directly lift the pipe column to cut off the shear pin, and the lower joint engages with the keyway of the lower straightening ring. The scraper and the body rotate with the pipe column to release the jam.

Technical parameters: