Grind, Radius : Grinding performed to remove sharp edges and/or abrupt changes in the well thickness around exploratory grinds or imperfections. (RP 5A5)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}