دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (obsolete) kelly;kelly joint. grinding and buffing n: in pipeline construction, the process of cleaning pipe ends of dirt. rust, mill scale, or solvent to prepare them for welding. Grinding and buffing tasks are accomplished with power hand tools such as wire brushes and buffers. grind out v: to test for the presence of water in oil by use of a centrifuge.

n: refer to “kelly”

n: see kelly.

n: a heavy squre ,triangular or hexagonal pipe which transmits torque from the rotary table to the drillstring by means of a drive bushing.