| CPC E21B 47/08 (2013.01) | 20 Claims |

|
1. A wellbore measuring apparatus comprising:
an outer body that is tubular and connectable in line with a drill string;
a plurality of sensors operatively coupled to and axially spaced along the outer body, the sensors being arranged in a plurality of tiers, with each said tier comprising three or more said sensors and with each said sensor being arranged to measure at least one characteristic of a wellbore; and
at least one rib coupled to and extending radially outwards from the outer surface of the outer body, with the at least one rib being helical in shape and with the plurality of sensors being adjacent to the at least one rib.
|