PROBLEMS OF MEASURING OF MOTION PARAMETERS OF THE DRILL STRING

Abstract

The current methods of measuring of parameters of the movement of the drill string are reviewed. The as-sessment of these methods from the point of view of metrology and the effectiveness of the application of measuring equipment is given. There are presented the block diagrams of devices for measuring the parameters of movement of the drill string on the angle of rotation of the drill winch drum with automatic correction of measurement errors arising due to changes in the radius of cable winding on winch drum, when winding from one layer to another. Diagrams of mechanical and electrical devices for automatic correction of measurement errors are presented.