Sizes
Popular hole sizes for well bores range from 5" to 26" in diameter. Size of circulation passage through the center of the body of the reamer typically range from 1 1/2" to 3 1/4" in diameter. The body size on the necks beyond the area where the rollers are mounted typically range from 4 1/8" to 11" in diameter. This latter size will normally be the same size as the drill collar. Body links normally range from 4' to 8'.3-point / 6-point
Most roller-reamers have three rollers equally spaced in a single transverse section. Such roller-reamers are referred to as "3-point reamer". When two sets of three rollers spaced apart longitudinally are used, the roller-reamer is called a "6-point reamer". However, large diameter roller-reamers may have more than three rollers in one transverse section.See also
* Drilling rig * Driller (oil) *External links