A reamer, also known as a reamer or reamer bit, is a tool used to widen the hole and trim the wall of the wellbore during oil drilling. It is usually installed in the middle of the drill string, and its diameter is slightly larger than the diameter of the drill bit. When the drill bit drills underground, it widens the hole and simultaneously cuts the wellbore wall to ensure that the diameter of the wellbore meets the design requirements. It plays an important role in the drilling process, especially in formations that are easily deflected and compressed in diameter, and its applications are more extensive.
The working principle is to use its special structure and materials to contact and apply pressure to the borehole wall during drilling, thereby expanding the diameter of the wellbore and undercutting the borehole wall. The blades or blades of the reamer gradually wear out during the drilling process, so they need to be replaced regularly to ensure the expansion effect.
It is widely used in the field of oil drilling, especially in formations where it is necessary to widen the diameter of the wellbore, repair the well wall, or solve the problems of easy deflection and easy shrinkage that occur during drilling. It can also be used in other areas where it is necessary to widen the wellbore or repair the well wall, such as geological exploration, mining, etc.
