Scratcher Drilling Equipment
A scratcher is an important drilling tool designed to clean mud and filter cake off the wellbore wall. It is fastened to the outside of the casing and equipped with metal wire bristles that scrape away mud cake from permeable zones. By removing this layer, the scratcher ensures that the cement bonds solidly to the formation, improving well integrity.
enefits of Scratcher Drilling Equipment
| Benefit | Description |
|---|---|
| Cleaner wellbore walls | Removes mud and filter cake effectively from the casing wall |
| Stronger cement bonding | Ensures solid cement adhesion to the formation for better zonal isolation |
| Easy installation | Hinged collar design allows quick and secure fastening around casing |
| Long service life | Durable wire bristles withstand tough drilling conditions |
| Wide size range | Available for casing sizes from 4 ½” to 20” |
