DRILL PIPE HANDLING

摘要

A method for making up a drill pipe stand comprising of a number of individual lengths of drill pipe in a well drilling rig, comprises: (a) engaging first pipe length adjacent the box end in supported drivable pipe rotating device; (b) lowering the pin end of a vertically arranged second pipe length along the axis into aligned engagement with the box end of the first pipe length; (c) holding second pipe length from rotation about the axis while yieldably supporting the second length for limited movement along the axis; (d) driving the device to rotate the first pipe length about the axis in a direction causing the pin and box ends of the first and second pipe lengths to thread together to form a drill pipe stand; and (e) releasing the stand from movment constraints associated with the driving step. The yieldably supporting operations afford limited longitudinal, lateral and angular play of the pin and box ends of the two pipe lengths relative to each other before and during performance of the driving step.