The main working principle of drill string stabilizers is to reduce the high stress generated by drill string oscillation and bending, thereby reducing friction and vibration, protecting the drill bit and drill string, and improving drilling efficiency.
Specifically, drill string stabilizers are divided into two types: cutting type and non-cutting type. Cutting type drill string stabilizers use the drill bit to cut the wellbore, shaping the wellbore into a circle or rectangle slightly larger than the drill string diameter, thus reducing friction between the drill bit and drill string and preventing drill string bending and breakage. Non-cutting type drill string stabilizers reduce friction and vibration by stabilizing and supporting the drill string, thereby reducing wear on the drill bit and drill string.
Furthermore, drill string stabilizers come in various shapes, such as spiral, finned, and gear-shaped, each providing different stabilization effects. In practical applications, it is necessary to select the appropriate drill string stabilizer model and quantity based on different wellbore environments and drilling processes to achieve the ideal drilling results.
