AN APPARATUS AND SYSTEM AND METHOD OF MEASURING DATA IN A WELL EXTENDING BELOW SURFACE

摘要

The present invention relates to a system for measuring data in a well extending below surface, said system comprising a body (101) having a longitudinal axis and a front end (103) and a rear end (104); locomotion means (105); control means (106) adapted to control direction and/or speed of the locomotion means (105); said control means (106) being controllable from the surface.