Spiral drill collar pipe is a term used in mechanics. It refers to a drill collar with spiral grooves made on the outer cylindrical surface of a conventional drill collar.
It is mainly used in the drilling process to prevent the drill bit from getting stuck due to pressure drop blockage.
Spiral Drill Collar Pipe has a shallow and wide spiral groove, which can reduce the contact area with the hole wall by 40%\~50%, thereby reducing the possibility of blocking under pressure difference.
Preventing the drill from jamming due to pressure drop: The spiral groove design allows the drilling fluid to flow freely around the drill collar, balancing the pressure and effectively preventing the drill from jamming due to pressure drop.
Lighter weight: Compared to round drill collars, spiral drill collars weigh 4%\~6% less, but their weight is reduced by only 7%\~10%, making it easier to operate and operate while maintaining sufficient rigidity.
Drill bit centralizer: Drill collars are mainly used to provide drilling pressure on the drill bit during drilling, so that the drill pipe is in a stretched state, and stabilize the drill bit with its greater rigidity to maintain the wellbore trajectory. Spiral drill collars also have this feature.
Drill collar pipes are widely used in oil drilling, geological exploration and other industries, especially in situations where it is necessary to prevent rig sticking and improve drilling efficiency.
