Stabilizer

Drilling Equipment & Components

A stabilizer is a BHA component with blades that stick out to the full gauge of the hole. Its function is to center the drillstring in the wellbore, which helps improve drilling efficiency, prevent buckling, and control hole deviation.

Stabilizers are essential in directional drilling. By placing them at specific distances from the bit (a 'packed hole' or 'pendulum' assembly), drillers can build, drop, or hold the angle of the well. Blades can be integral (machined from solid steel) or welded, utilizing hard-facing material to resist wear.